Best Biotin Supplements

48.7k reviews scanned and analysysed
Matt Brandon
Matt Brandon Writer
Last Updated: Oct 22, 2024 Share On:

When you're trying to find the best biotin supplements, you'll find it's a daunting job. With dozens of brands and hundreds of models that come with different types, you'll be lost amidst a sea of choices, so let our experts help you.

Our experts researched 406 related products, their brands include Pure Encapsulations, Nutricost, and Nature'S Bounty Optimal Solutions, from which we selected 20 to compile into a list of the best biotin supplements.

Read our article and you'll get clear and unbiased advice on which to buy.

A Quick Look: Our Top Picks

Top 1
Nature'S Bounty NRT51697 Biotin, Supports Healthy Hair
9.8We rank the products based on a number of factors such as features, price, customer reviews and so on.

Nature'S Bounty NRT51697 Biotin, Supports Healthy Hair

Top 1 Nature'S Bounty NRT51697 Biotin, Supports Healthy Hair

Nature'S Bounty NRT51697 Biotin, Supports Healthy Hair

Read More Check Price
Top 2
Nutraharmony BC-01 Biotin | Collagen | Keratin - Clinically Tested Supplement
9.6We rank the products based on a number of factors such as features, price, customer reviews and so on.

Nutraharmony BC-01 Biotin | Collagen | Keratin - Clinically Tested Supplement

Top 2 Nutraharmony BC-01 Biotin | Collagen | Keratin - Clinically Tested Supplement

Nutraharmony BC-01 Biotin | Collagen | Keratin - Clinically Tested Supplement

Read More Check Price
Top 3
Amazon Elements TRBO1-20JN23321 Vegan Biotin 5000 Mcg
9.5We rank the products based on a number of factors such as features, price, customer reviews and so on.

Amazon Elements TRBO1-20JN23321 Vegan Biotin 5000 Mcg

Top 3 Amazon Elements TRBO1-20JN23321 Vegan Biotin 5000 Mcg

Amazon Elements TRBO1-20JN23321 Vegan Biotin 5000 Mcg

Read More Check Price

*Note The result is based on our independent research, and we are reader-supported and do not promote any brand or retailer. As a member of Amazon Marketing Affiliates, we may receive a commission from qualified purchases.

Top 20 Biotin Supplements Reviews 2024 In Detail

1 Editor's Choice

Nature'S Bounty NRT51697 Biotin, Supports Healthy Hair

NATURE'S BOUNTYBrand NRT51697Model 4.17H*1.98L*1.98W inchesDimension 0.15 lbWeight
Nature'S Bounty NRT51697 Biotin, Supports Healthy Hair cover
Nature'S Bounty NRT51697 Biotin, Supports Healthy Hair thumb #1Nature'S Bounty NRT51697 Biotin, Supports Healthy Hair thumb #2Nature'S Bounty NRT51697 Biotin, Supports Healthy Hair thumb #3Nature'S Bounty NRT51697 Biotin, Supports Healthy Hair thumb #4Nature'S Bounty NRT51697 Biotin, Supports Healthy Hair thumb #5
9.8We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Excellent Price: $
Save 55% + FreeShipping

Features
  • SUPPORTS HEALTHY HAIR (1) - As is a commonly used vitamin for healthy hair Biotin helps support and maintain healthy beautiful hair (1)
  • SKIN & NAIL HEALTH SUPPORT (1) - Biotin plays an important role in the health of your skin and also supports healthy nails so you can continue to look and feel your best (1)
  • NERVOUS SYSTEM SUPPORT (1) - As part of the B Family of vitamins Biotin helps support a healthy nervous system and has other benefits as well (1)
  • ENERGY METABOLISM - Your body uses B-Vitamins, like Biotin to help convert foods into cellular energy; (1) Natures Bounty Biotin vitamins may play an important role in helping maintain energy metabolism (1)
  • FROM THE TRUSTED WELLNESS EXPERTS - Natures Bounty Biotin Softgels are a product of 50 years of dedication to quality consistency and scientific research to make vitamins and nutritional supplements of unrivaled excellence
2 Editor's Choice

Nutraharmony BC-01 Biotin | Collagen | Keratin - Clinically Tested Supplement

NUTRAHARMONYBrand BC-01Model 0.15 lbWeight
Nutraharmony BC-01 Biotin | Collagen | Keratin - Clinically Tested Supplement cover
Nutraharmony BC-01 Biotin | Collagen | Keratin - Clinically Tested Supplement thumb #1Nutraharmony BC-01 Biotin | Collagen | Keratin - Clinically Tested Supplement thumb #2Nutraharmony BC-01 Biotin | Collagen | Keratin - Clinically Tested Supplement thumb #3Nutraharmony BC-01 Biotin | Collagen | Keratin - Clinically Tested Supplement thumb #4Nutraharmony BC-01 Biotin | Collagen | Keratin - Clinically Tested Supplement thumb #5Nutraharmony BC-01 Biotin | Collagen | Keratin - Clinically Tested Supplement thumb #6Nutraharmony BC-01 Biotin | Collagen | Keratin - Clinically Tested Supplement thumb #7Nutraharmony BC-01 Biotin | Collagen | Keratin - Clinically Tested Supplement thumb #8
9.6We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Excellent Price: $$$
FreeShipping
Visit Store » Molino Co. ( 4.9 / 5 )

Features
  • Biotin with Hyaluronic Acid & Collagen Supplement The Nutraharmony biotin supplement contains potent Biotin, Collagen, Keratin, and other essential nutrients that naturally support your health and beauty. Take two capsules a day with our highly bioavailable formula that promotes fast and proper absorption. Take care of your skinch
  • Hair, Skin & Nails Vitamins Biotin capsules were designed to give you what your body needs. Each capsule features biotin and keratin to maintain healthy & silky hair. Biotin Capsules support skin radiance & overall nail health. Elevate your beauty effortlessly with this convenient solution that helps you maintain your peak allure!
  • Collagen, Keratin & Biotin Complex Our hair, nail, and skin vitamins help promote a younger-looking appearance and support strong nails & hair. Because our formula is superior, you can rest assured that you're taking the finest for your health and beauty. Enjoy a healthy-looking complexion.
  • Effective Protein Formula We believe that beauty starts from withinch Our advanced technology is how we can manufacture the highest quality biotin supplements in the USA. The capsules are formulated without GMOs, gluten, and corn syrup, so you can feel good about what you are putting in your body.
  • Highest Quality We work hard to produce high-quality biotin pills to meet and exceed your expectations. However, if we fall short of your expectations, please drop us a message, and we will do everything in our power to respond promptly and fix the issue as soon as possible because you deserve it. The term "Beauty Complex" represents vitamins B2, B3, B6 and B7 (Biotin)
3 Editor's Choice

Amazon Elements TRBO1-20JN23321 Vegan Biotin 5000 Mcg

AMAZON ELEMENTSBrand TRBO1-20JN23321Model 3.5H*1.9L*1.9W inchesDimension 0.09 lbWeight
Amazon Elements TRBO1-20JN23321 Vegan Biotin 5000 Mcg cover
Amazon Elements TRBO1-20JN23321 Vegan Biotin 5000 Mcg thumb #1Amazon Elements TRBO1-20JN23321 Vegan Biotin 5000 Mcg thumb #2Amazon Elements TRBO1-20JN23321 Vegan Biotin 5000 Mcg thumb #3Amazon Elements TRBO1-20JN23321 Vegan Biotin 5000 Mcg thumb #4Amazon Elements TRBO1-20JN23321 Vegan Biotin 5000 Mcg thumb #5Amazon Elements TRBO1-20JN23321 Vegan Biotin 5000 Mcg thumb #6Amazon Elements TRBO1-20JN23321 Vegan Biotin 5000 Mcg thumb #7
9.5We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Excellent Price: $
FreeShipping

Features
  • ONE BOTTLE CONTAINS - 130 capsules, a 4 month supply (taken daily at the listed serving size)
  • FOR HAIR, SKIN & NAILS - Helps maintain normal hair, skin, and nails
  • SUPPORTS COGNITION - Helps support brain function, cognition, and energy metabolism
  • NO ARTIFICIAL - Colors, flavors, or chemical preservatives; vegan; gluten free
  • BLENDED AND PACKAGED IN USA - Made in a Good Manufacturing Practices (GMP) facility in the USA; product of China
  • PRODUCT NOTE - Exposure to heat or sunlight may lead to melting/damage of product; Amazon stores and ships products in accordance with manufacturers recommendations when provided
  • An Amazon brand
4

Sports Research 2724354120600 Vegan Biotin 10,000Mcg

SPORTS RESEARCHBrand 2724354120600Model 2.52H*2.36L*5.67W inchesDimension
Sports Research 2724354120600 Vegan Biotin 10,000Mcg cover
Sports Research 2724354120600 Vegan Biotin 10,000Mcg thumb #1Sports Research 2724354120600 Vegan Biotin 10,000Mcg thumb #2Sports Research 2724354120600 Vegan Biotin 10,000Mcg thumb #3Sports Research 2724354120600 Vegan Biotin 10,000Mcg thumb #4Sports Research 2724354120600 Vegan Biotin 10,000Mcg thumb #5Sports Research 2724354120600 Vegan Biotin 10,000Mcg thumb #6Sports Research 2724354120600 Vegan Biotin 10,000Mcg thumb #7Sports Research 2724354120600 Vegan Biotin 10,000Mcg thumb #8
9.2We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Excellent Price: $$$
Save 9% + FreeShipping

Features
  • ENERGY PRODUCTION SUPPORT - Also known as Vitamin B7, Biotin plays an important role in metabolizing carbohydrates, fats & proteins. This once-a-day formula makes it easier to get the essential micronutrient*
  • HEALTHY HAIR & SKIN - Healthy hair and skin require consistent keratin synthesisthe protein found in our cells. Our biotin supplements give you a chance to increase these production levels naturally, leading to results you can both see and feel*
  • VEGAN CERTIFIED - Our biotin is Vegan Certified and encapsulated in the worlds only non-GMO verified, bovine, and carrageenan-free, Plantgel capsule. Its filler-free, formulated with organic coconut oil, and Manufactured in the USA in cGMP-compliant facilities
  • PREMIUM, POTENT FORMULAS - Take your pick between our High Potency Biotin 2,500 mcg, Extra Strength Biotin 5,000 mcg, and Max Strength Biotin 10,000 mcgall gluten-free, soy-free, and made with cold-pressed 100% organic coconut oil
  • THE SPORTS RESEARCH DIFFERENCE - Founded in Southern California in 1980, Sports Research is a family-owned business born from a passion for fitness and wellness. Our goal is to embrace the sport of life through research-backed products created for every bodyinside and out
5

Vitboost VITBIOTIN-CK Biotin With Hyaluronic Acid

VITBOOSTBrand vitbiotin-CKModel 0.18 lbWeight
Vitboost VITBIOTIN-CK Biotin With Hyaluronic Acid cover
Vitboost VITBIOTIN-CK Biotin With Hyaluronic Acid thumb #1Vitboost VITBIOTIN-CK Biotin With Hyaluronic Acid thumb #2Vitboost VITBIOTIN-CK Biotin With Hyaluronic Acid thumb #3Vitboost VITBIOTIN-CK Biotin With Hyaluronic Acid thumb #4Vitboost VITBIOTIN-CK Biotin With Hyaluronic Acid thumb #5Vitboost VITBIOTIN-CK Biotin With Hyaluronic Acid thumb #6Vitboost VITBIOTIN-CK Biotin With Hyaluronic Acid thumb #7
9.1We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Excellent Price: $$
Save 37% + FreeShipping
Visit Store » Vitboost ( 4.84 / 5 )

Features
  • Biotin Collagen & Keratin Supplement - An essential blend of biotin vitamins, collagen, and keratinch Our biotin for women and men works to nourish your hair, skin, and nails to diminish signs of aging by fortifying your body with essential antioxidants.
  • Thicker, Fuller, Healthier Hair, Stronger Nails & Softer Skin Taken regularly, biotin with Hyaluronic acid can also help strengthen hair at the root which improves strength, reduces breakage and split ends, and leaves it feeling softer and looking more vibrant for beauty you can see and feel. It also strengthens nails and helps improve skin elasticity and firmness for radiance you won't miss.
  • The Power of Collagen, Keratin & Biotin Complex - Our carefully formulated hair vitamins for thicker hair growth and overall beauty enhancement are crafted to nourish your body from withinch Prepare to be amazed by the transformative effects of our biotin supplements, as they stimulate healthy hair growth, enhance skin elasticity, and fortify your nails. Embrace the radiance that comes from nurturing your hair, skin, and nails with Vitboost's exceptional care and dedication.
  • True Purity and Effectiveness Vitboost premium biotin complex is non-GMO, sugar free, gluten free, and made with premium ingredients - Manufactured in a cGMP USA verified facility, which is important for maintaining a consistent vitamin or multivitamin regimen while sticking to your dietary efforts.
  • Made In USA! Third Party Tested - At Vitboost, quality is our main priority. Thats why our biotin vitamins are made in the USA with only safe and tested ingredients that meet the most rigorous standards-. Our supplements are cruelty-free and do not contain any fillers, preservatives or artificial ingredients.
6

Nature'S Bounty B001G7QVHW Biotin, Vitamin Supplement

NATURE'S BOUNTYBrand B001G7QVHWModel 3.6H*1.8L*1.8W inchesDimension 0.04 lbWeight
Nature'S Bounty B001G7QVHW Biotin, Vitamin Supplement cover
Nature'S Bounty B001G7QVHW Biotin, Vitamin Supplement thumb #1Nature'S Bounty B001G7QVHW Biotin, Vitamin Supplement thumb #2Nature'S Bounty B001G7QVHW Biotin, Vitamin Supplement thumb #3Nature'S Bounty B001G7QVHW Biotin, Vitamin Supplement thumb #4Nature'S Bounty B001G7QVHW Biotin, Vitamin Supplement thumb #5Nature'S Bounty B001G7QVHW Biotin, Vitamin Supplement thumb #6Nature'S Bounty B001G7QVHW Biotin, Vitamin Supplement thumb #7Nature'S Bounty B001G7QVHW Biotin, Vitamin Supplement thumb #8
8.9We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good Price: $
Save 37% + FreeShipping
Visit Store » greenBulk ( 4.91 / 5 )

Features
  • Supports Healthy Hair, Skin & Nails
  • Product Note - Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • Cellular Energy Support
  • Vitamin Supplement Packaging may vary
7

Nature Made 2917 Extra Strength Biotin 2500 Mcg, Dietary Supplement

NATURE MADEBrand 2917Model 4.25H*2.0L*2.0W inchesDimension 0.13 lbWeight
Nature Made 2917 Extra Strength Biotin 2500 Mcg, Dietary Supplement cover
Nature Made 2917 Extra Strength Biotin 2500 Mcg, Dietary Supplement thumb #1Nature Made 2917 Extra Strength Biotin 2500 Mcg, Dietary Supplement thumb #2Nature Made 2917 Extra Strength Biotin 2500 Mcg, Dietary Supplement thumb #3Nature Made 2917 Extra Strength Biotin 2500 Mcg, Dietary Supplement thumb #4Nature Made 2917 Extra Strength Biotin 2500 Mcg, Dietary Supplement thumb #5Nature Made 2917 Extra Strength Biotin 2500 Mcg, Dietary Supplement thumb #6Nature Made 2917 Extra Strength Biotin 2500 Mcg, Dietary Supplement thumb #7Nature Made 2917 Extra Strength Biotin 2500 Mcg, Dietary Supplement thumb #8Nature Made 2917 Extra Strength Biotin 2500 Mcg, Dietary Supplement thumb #9Nature Made 2917 Extra Strength Biotin 2500 Mcg, Dietary Supplement thumb #10
8.9We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good Price: $$
Save 17% + FreeShipping

Features
  • Healthy hair, skin, nail support supplement - contains one 150 count bottle of Nature Made Extra Strength Biotin 2500 mcg Softgels for a 150-day supply
  • Each Nature Made Biotin 2500 mcg softgel supports hair health, skin health, and healthy nails for those low in Biotin
  • This Biotin supplement also supports energy metabolism (1)
  • Adults, take one softgel daily with water and a meal
  • These gluten free Biotin softgels are made from carefully selected ingredients and have no synthetic dyes and no artificial flavors
  • United States Pharmacopeia (USP) Verified, #1 Pharmacist Recommended Vitamin and Supplement Brand*
8

Nature Made 4273 One Per Day Biotin (B7) 1000 Mcg. Softgels 120 Ct

NATURE MADEBrand 4273Model 4.25H*2.0L*2.0W inchesDimension 0.11 lbWeight
Nature Made 4273 One Per Day Biotin (B7) 1000 Mcg. Softgels 120 Ct cover
Nature Made 4273 One Per Day Biotin (B7) 1000 Mcg. Softgels 120 Ct thumb #1Nature Made 4273 One Per Day Biotin (B7) 1000 Mcg. Softgels 120 Ct thumb #2Nature Made 4273 One Per Day Biotin (B7) 1000 Mcg. Softgels 120 Ct thumb #3Nature Made 4273 One Per Day Biotin (B7) 1000 Mcg. Softgels 120 Ct thumb #4Nature Made 4273 One Per Day Biotin (B7) 1000 Mcg. Softgels 120 Ct thumb #5Nature Made 4273 One Per Day Biotin (B7) 1000 Mcg. Softgels 120 Ct thumb #6Nature Made 4273 One Per Day Biotin (B7) 1000 Mcg. Softgels 120 Ct thumb #7Nature Made 4273 One Per Day Biotin (B7) 1000 Mcg. Softgels 120 Ct thumb #8Nature Made 4273 One Per Day Biotin (B7) 1000 Mcg. Softgels 120 Ct thumb #9Nature Made 4273 One Per Day Biotin (B7) 1000 Mcg. Softgels 120 Ct thumb #10
8.8We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good Price: $$
FreeShipping

Features
  • Healthy hair and skin support supplement - contains one 120 count bottle of Nature Made Biotin 1000 mcg softgels for a 120-day supply
  • Product Note - Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • This Nature Made Biotin supplement supports hair health and skin health
  • These Biotin softgels also support energy metabolism(1)
  • Adults, take one softgel daily with water and a meal
  • These gluten free softgels are made with carefully selected high-quality ingredients and have no synthetic dyes and no artificial flavors
  • United States Pharmacopeia (USP) Verified, Pharmacist Recommended Vitamin and Supplement Brand*
  • These statements have not been evaluated by the Food and Drug Administration; this product is not intended to diagnose, treat, cure, or prevent any disease
9

Natureon Biotin | Collagen | Keratin

NATUREONBrand
Natureon Biotin | Collagen | Keratin cover
Natureon Biotin | Collagen | Keratin thumb #1Natureon Biotin | Collagen | Keratin thumb #2Natureon Biotin | Collagen | Keratin thumb #3Natureon Biotin | Collagen | Keratin thumb #4Natureon Biotin | Collagen | Keratin thumb #5Natureon Biotin | Collagen | Keratin thumb #6Natureon Biotin | Collagen | Keratin thumb #7Natureon Biotin | Collagen | Keratin thumb #8
8.7We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good Price: $$$
FreeShipping
Visit Store » NatureOn ( 5.0 / 5 )

Features
  • BEST BIOTIN FOR HAIR GROWTH - If you're experiencing hair loss, you're probably asking how to prevent it and what's causing it. Many underlying conditions, including systemic ones, can cause hair loss. Our biotin for hair growth could be a game changer for anyone experiencing hair thinning due to a biotin deficiency. With only two capsules daily, our ideal balance of biotin and collagen supplement promotes faster hair development!
  • HAIR, SKIN, AND NAILS VITAMINS - These biotin hair growth vitamins helps improve your hair health and nourish it from within to promote faster hair growth and a shiny appearance. These hair nails and skin vitamins for women and men promote healthy robust nails by eliminating discoloration and also enhance moisture retention & keep the skin hydrated. Enjoy the incredible benefits of this biotin hair skin and nails vitamins for the most radiant and vibrant look!
  • EXCEPTIONAL BEAUTY FUSION This perfect blend of Biotin 10000mcg, Collagen, Keratin, Hyaluronic Acid, and B Complex vitamins nourishes from within, promoting strong, shiny hair, radiant skin, and healthy nails. Suitable for all hair types and colors, this hair skin nails vitamins for women and men reduces shedding and enhances overall beauty. Reveal your most radiant, confident self with this all-in-one beauty boost!
  • COLLAGEN FOR WOMEN AND MEN- Collagen biotin is truly fantastic for overall wellness! They beautifully enhance skin hydration and improve skin elasticity and thickness giving your complexion a radiant and refreshed glow. Furthermore, collagen peptides strengthen hair and nails, making them less brittle and promoting vibrant nail growth and healthy hair for you to enjoy a youthful, glowing look and a significant boost in confidence!
  • EXCELLENT ALTERNATIVE- Have you been using biotin pills, biotin gummies, biotin softgels, or nail growth gummies without seeing the results you hoped for? It's the perfect time to try our biotin collagen hair vitamins! Our specially formulated biotin supplement for hair growth is designed to accommodate different ages, health statuses, and dietary needs. With biotin capsules, you can enjoy outstanding bioavailability and support faster hair growth!
10

Now Foods 733739004796 Supplements, Biotin 10 Mg

NOW FOODSBrand 733739004796Model 4.38H*2.25L*2.25W inchesDimension 0.25 lbWeight
Now Foods 733739004796 Supplements, Biotin 10 Mg  cover
Now Foods 733739004796 Supplements, Biotin 10 Mg  thumb #1Now Foods 733739004796 Supplements, Biotin 10 Mg  thumb #2Now Foods 733739004796 Supplements, Biotin 10 Mg  thumb #3Now Foods 733739004796 Supplements, Biotin 10 Mg  thumb #4Now Foods 733739004796 Supplements, Biotin 10 Mg  thumb #5Now Foods 733739004796 Supplements, Biotin 10 Mg  thumb #6Now Foods 733739004796 Supplements, Biotin 10 Mg  thumb #7Now Foods 733739004796 Supplements, Biotin 10 Mg  thumb #8
8.6We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good Price: $$
Save 42% + FreeShipping

Features
  • NOW's Extra Strength Biotin Supplement, with 10 mg/10,000 mcg, in Vegetarian/Vegan Capsules Supports Healthy Hair, Skin, and Nails*
  • Product Note - Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • FOR ENERGY PRODUCTION - * Supports amino acid metabolism and promotes normal immune function.* Bioton also plays a critical role in skin health for hair, skin, and nails.*
  • Non-GMO, Vegan/Vegetarian, Kosher, Halal, Soy Free, Egg Free, Dairy Free, Nut Free, Soy Free, Made Without Gluten
  • GMP Quality Assured - NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
  • Packaged in the USA by a family owned and operated company since 1968
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.
11

Pure Encapsulations BI1 Biotin 8 Mg - B Vitamin Supplement To Aid Stress Relief

PURE ENCAPSULATIONSBrand BI1Model 1.2H*3.5L*1.8W inchesDimension 0.1 lbWeight
Pure Encapsulations BI1 Biotin 8 Mg - B Vitamin Supplement To Aid Stress Relief cover
Pure Encapsulations BI1 Biotin 8 Mg - B Vitamin Supplement To Aid Stress Relief thumb #1Pure Encapsulations BI1 Biotin 8 Mg - B Vitamin Supplement To Aid Stress Relief thumb #2Pure Encapsulations BI1 Biotin 8 Mg - B Vitamin Supplement To Aid Stress Relief thumb #3Pure Encapsulations BI1 Biotin 8 Mg - B Vitamin Supplement To Aid Stress Relief thumb #4Pure Encapsulations BI1 Biotin 8 Mg - B Vitamin Supplement To Aid Stress Relief thumb #5Pure Encapsulations BI1 Biotin 8 Mg - B Vitamin Supplement To Aid Stress Relief thumb #6Pure Encapsulations BI1 Biotin 8 Mg - B Vitamin Supplement To Aid Stress Relief thumb #7
8.5We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good Price: $$$
FreeShipping
Visit Store » Pattern. ( 4.93 / 5 )

Features
  • Biotin Capsule - This hair, skin, and nail supplement supports healthy hair and nail growth; biotin may reinforce keratin structure
  • Hair, Skin & Nail Vitamin - This biotin hair and skin supplement may help strengthen hair, nails, and skin; also may reduce nail splitting
  • Metabolism & Nail Support - This biotin capsule helps to strengthen nails and hair; biotin vitamin also support metabolism and nervous system
  • Pure Quality - Our supplements are made with premium ingredients sourced from trusted suppliers and guided by nutritional experts, then manufactured and tested to verify potency and purity
  • Pure Difference - What we leave out matters, too; Pure Encapsulations products are FREE FROM common allergens, artificial or unnecessary ingredients, and GMOs
12

Bronson 1194-360 Biotin 10,000 Mcg Supports Healthy Hair

BRONSONBrand 1194-360Model 0.2 lbWeight
Bronson 1194-360 Biotin 10,000 Mcg Supports Healthy Hair cover
Bronson 1194-360 Biotin 10,000 Mcg Supports Healthy Hair thumb #1Bronson 1194-360 Biotin 10,000 Mcg Supports Healthy Hair thumb #2Bronson 1194-360 Biotin 10,000 Mcg Supports Healthy Hair thumb #3Bronson 1194-360 Biotin 10,000 Mcg Supports Healthy Hair thumb #4Bronson 1194-360 Biotin 10,000 Mcg Supports Healthy Hair thumb #5Bronson 1194-360 Biotin 10,000 Mcg Supports Healthy Hair thumb #6Bronson 1194-360 Biotin 10,000 Mcg Supports Healthy Hair thumb #7
8.4We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good Price: $$
FreeShipping

Features
  • High Quality & Great Value - Bronson Basics Biotin provides 10,000 MCG of premium Biotin per mini tablet in a 1 year supply bottle. We strive to support your good health and well-being through high quality supplements at the best value.
  • Hair, Skin & Nails Support - By supplying 10,000 MCG per mini tablet, Bronson Basics Biotin enables valuable daily replenishment that helps to support healthy hair, skin, nails, energy production, and nervous system health.*
  • Superior Quality - Laboratory tested GMO-Free, Gluten-Free and Soy-Free. Bronson products are in-house tested and carefully manufactured by trained professionals in our state-of-the-art facility that is located in Hauppauge, New York.
  • cGMP Premium Standards - Every product manufactured by Bronson is put through a rigorous process to ensure purity, potency and integrity. Through our very own cGMP Certified New York Facility that complies with the most current regulations, we promise to deliver top-quality supplements that are consistently verified for quality and safety.
  • Trusted Since 1960 - The pioneers of Bronson Vitamins were a group of pharmacists who witnessed the benefits of vitamins and mineral supplementation firsthand with their patients. Bronson Vitamins have been consistently mentioned by top medical professionals since our inception in 1960.
13

Nutricost 8570375 Biotin (Vitamin B7) 10,000Mcg (10Mg) Vitamin Supplement

NUTRICOSTBrand 8570375Model 0.0 lbWeight
Nutricost 8570375 Biotin (Vitamin B7) 10,000Mcg (10Mg) Vitamin Supplement cover
Nutricost 8570375 Biotin (Vitamin B7) 10,000Mcg (10Mg) Vitamin Supplement thumb #1Nutricost 8570375 Biotin (Vitamin B7) 10,000Mcg (10Mg) Vitamin Supplement thumb #2Nutricost 8570375 Biotin (Vitamin B7) 10,000Mcg (10Mg) Vitamin Supplement thumb #3Nutricost 8570375 Biotin (Vitamin B7) 10,000Mcg (10Mg) Vitamin Supplement thumb #4Nutricost 8570375 Biotin (Vitamin B7) 10,000Mcg (10Mg) Vitamin Supplement thumb #5Nutricost 8570375 Biotin (Vitamin B7) 10,000Mcg (10Mg) Vitamin Supplement thumb #6Nutricost 8570375 Biotin (Vitamin B7) 10,000Mcg (10Mg) Vitamin Supplement thumb #7
8.4We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good Price: $$
FreeShipping

Features
  • Biotin (Vitamin B7) - 240 Capsules With 10000 MCG Of High Quality Biotin Per Capsule
  • Up to 8 Month (240 Day) Supply, 1 Serving Is Just 1 capsule
  • Packed with Vitamin B7 - Also Known As Vitamin H
  • Nutricost Biotin is Non-GMO, Gluten Free, and 3rd Party Tested
  • Made in a GMP Compliant, FDA Registered Facility
14

Carlyle CL5512 Biotin 10000Mcg | 250 Fast Dissolve Tablets | Max Strength | Vegetarian, Non-Gmo, Gluten Free Supplement

CARLYLEBrand CL5512Model 3.75H*1.95L*1.95W inchesDimension 0.1 lbWeight
Carlyle CL5512 Biotin 10000Mcg | 250 Fast Dissolve Tablets | Max Strength | Vegetarian, Non-Gmo, Gluten Free Supplement cover
Carlyle CL5512 Biotin 10000Mcg | 250 Fast Dissolve Tablets | Max Strength | Vegetarian, Non-Gmo, Gluten Free Supplement thumb #1Carlyle CL5512 Biotin 10000Mcg | 250 Fast Dissolve Tablets | Max Strength | Vegetarian, Non-Gmo, Gluten Free Supplement thumb #2Carlyle CL5512 Biotin 10000Mcg | 250 Fast Dissolve Tablets | Max Strength | Vegetarian, Non-Gmo, Gluten Free Supplement thumb #3Carlyle CL5512 Biotin 10000Mcg | 250 Fast Dissolve Tablets | Max Strength | Vegetarian, Non-Gmo, Gluten Free Supplement thumb #4Carlyle CL5512 Biotin 10000Mcg | 250 Fast Dissolve Tablets | Max Strength | Vegetarian, Non-Gmo, Gluten Free Supplement thumb #5Carlyle CL5512 Biotin 10000Mcg | 250 Fast Dissolve Tablets | Max Strength | Vegetarian, Non-Gmo, Gluten Free Supplement thumb #6
8.4We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good Price: $
Save 15% + FreeShipping
Visit Store » Carlyle ( 4.93 / 5 )

Features
  • MAXIMUM BIOTIN - Support a strong beauty regimen daily with this Extra Strength Essential B Vitamin!
  • FAST DISSOLVE - Convenient tablets provide 10,000 mcg of Biotin with a natural berry flavor
  • EXPERTLY CRAFTED - Our vegetarian formula is backed by our commitment to purity and potency
  • CARLYLE MANUFACTURERS - Laboratory Tested, Trusted Ingredients, Superior Quality, 100% Guaranteed!
  • NATURALLY FREE OF - Gluten, Yeast, Milk, Lactose, Artificial Flavor, Preservatives and Non-GMO
15

Clean Nutraceuticals CLN-MULTI-MANE-1P Collagen Pills 1000Mg Biotin 10000Mcg Keratin Saw Palmetto 2500Mg Hyaluronic Acid

CLEAN NUTRACEUTICALSBrand CLN-MULTI-MANE-1PModel 0.2 lbWeight
Clean Nutraceuticals CLN-MULTI-MANE-1P Collagen Pills 1000Mg Biotin 10000Mcg Keratin Saw Palmetto 2500Mg Hyaluronic Acid cover
Clean Nutraceuticals CLN-MULTI-MANE-1P Collagen Pills 1000Mg Biotin 10000Mcg Keratin Saw Palmetto 2500Mg Hyaluronic Acid thumb #1Clean Nutraceuticals CLN-MULTI-MANE-1P Collagen Pills 1000Mg Biotin 10000Mcg Keratin Saw Palmetto 2500Mg Hyaluronic Acid thumb #2Clean Nutraceuticals CLN-MULTI-MANE-1P Collagen Pills 1000Mg Biotin 10000Mcg Keratin Saw Palmetto 2500Mg Hyaluronic Acid thumb #3Clean Nutraceuticals CLN-MULTI-MANE-1P Collagen Pills 1000Mg Biotin 10000Mcg Keratin Saw Palmetto 2500Mg Hyaluronic Acid thumb #4Clean Nutraceuticals CLN-MULTI-MANE-1P Collagen Pills 1000Mg Biotin 10000Mcg Keratin Saw Palmetto 2500Mg Hyaluronic Acid thumb #5Clean Nutraceuticals CLN-MULTI-MANE-1P Collagen Pills 1000Mg Biotin 10000Mcg Keratin Saw Palmetto 2500Mg Hyaluronic Acid thumb #6Clean Nutraceuticals CLN-MULTI-MANE-1P Collagen Pills 1000Mg Biotin 10000Mcg Keratin Saw Palmetto 2500Mg Hyaluronic Acid thumb #7Clean Nutraceuticals CLN-MULTI-MANE-1P Collagen Pills 1000Mg Biotin 10000Mcg Keratin Saw Palmetto 2500Mg Hyaluronic Acid thumb #8
8.2We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good Price: $$$
Save 20% + FreeShipping

Features
  • Advanced Collagen Pills for Women and Men - MultiMane Collagen Capsules include essential multi collagen pills (types I, II, III, and IV), biotin vitamins for hair skin and nails, keratin, and hyaluronic acid supplements and more. Forget the hair mask for dry damaged hair and growth and keratin hair mask. Clean Nutra has finally created unmatched collagen supplements for women and collagen for men that contain both type 1 collagen and type 2 collagen in each collagen pill.
  • The Hair Growth Vitamins Youve Been Looking For - Score 6 full-dose hair growth supplement products in one! Our hair vitamin contains a full biotin supplement, collagen supplement, vitamin C, vitamin E, folate (vitamin B9), and saw palmetto for men in a convenient 3 capsule dosage! Don't settle for plain old collagen peptides capsules, hair vitamins, multi collagen capsules, biotin 5000mcg, or saw palmetto for women that just have one or two ingredients. We made collagen for women better.
  • MultiMane Keratin and HSN100 Blends - With 6 full hair growth vitamins for women and collagen for hair growth included above, our formula also contains hair and nails vitamins for women such as hyaluronic acid capsules, pumpkin seed, MSM, PABA, glutathione, apple cider vinegar, a dht blocker for women hair growth and dht blocker for men! These 16-in-1 skin vitamins for women are packed with collagen vitamins, marine collagen capsules, biotin capsules, hyaluronic acid pills and collagen complex.
  • All-In-One Hair And Nail Vitamins - MultiMane is overflowing with potent collagen type 2, collagen peptides pills, biotin pills for hair growth, and more hair vitamins for women. Clear out those countless hair supplements for hair growth women in your supplement cabinet, and replace it with just one simple serving of collagen capsules for women and collagen pills for men using this 16-in-1 formula from Clean Nutraceuticals. Enjoy quality collagen for skin by taking multi collagen peptides.
  • Vetted and Trusted Ingredients - We pride ourselves in offering quality collagen, biotin for hair growth, protein pills for women, and prostate supplements for men. These hair growth support pills are made in a registered and certified facility and conquer alternatives like biotin oil, collagen tablets, biotina de 10000 mg, biotin 5000, saw palmetto gummies, saw palmetto shampoo, keratin hair treatment, and hair masks. This is an uncontested vitamin for hair growth for women.
16

Nature Made 2918 Maximum Strength Biotin 5000 Mcg, Dietary Supplement May Help Support Healthy Hair

NATURE MADEBrand 2918Model 4.25H*2.0L*2.0W inchesDimension 0.1 lbWeight
Nature Made 2918 Maximum Strength Biotin 5000 Mcg, Dietary Supplement May Help Support Healthy Hair cover
Nature Made 2918 Maximum Strength Biotin 5000 Mcg, Dietary Supplement May Help Support Healthy Hair thumb #1Nature Made 2918 Maximum Strength Biotin 5000 Mcg, Dietary Supplement May Help Support Healthy Hair thumb #2Nature Made 2918 Maximum Strength Biotin 5000 Mcg, Dietary Supplement May Help Support Healthy Hair thumb #3Nature Made 2918 Maximum Strength Biotin 5000 Mcg, Dietary Supplement May Help Support Healthy Hair thumb #4Nature Made 2918 Maximum Strength Biotin 5000 Mcg, Dietary Supplement May Help Support Healthy Hair thumb #5Nature Made 2918 Maximum Strength Biotin 5000 Mcg, Dietary Supplement May Help Support Healthy Hair thumb #6Nature Made 2918 Maximum Strength Biotin 5000 Mcg, Dietary Supplement May Help Support Healthy Hair thumb #7Nature Made 2918 Maximum Strength Biotin 5000 Mcg, Dietary Supplement May Help Support Healthy Hair thumb #8Nature Made 2918 Maximum Strength Biotin 5000 Mcg, Dietary Supplement May Help Support Healthy Hair thumb #9
8.2We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good Price: $$
Save 29% + FreeShipping

Features
  • Biotin support supplement - contains one 120 count bottle of Nature Made Maximum Strength Biotin 5000 mcg Softgels for a 120-day supply
  • Product Note - Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • This Biotin supplement supports hair health, skin health and nail health
  • These Biotin vitamins for hair skin and nails also support energy metabolsim(1)
  • Adults, take one of these Nature Made Maximum Strength Biotin 5000mcg softgels daily with water and a meal
  • Made from carefully selected ingredients, this gluten free Biotin supplement has no artificial flavors and no synthetic dyes-colors derived from natural sources
  • United States Pharmacopeia (USP) Verified , Pharmacist Recommended Vitamin and Supplement Brand*
  • These statements have not been evaluated by the Food and Drug Administration; this product is not intended to diagnose, treat, cure, or prevent any disease
17

Nature'S Bounty Optimal Solutions 35710 Nature'S Bounty Advanced Hair, Skin & Nails, Argan-Infused Vitamin Supplement With Biotin And Hyaluronic Acid

NATURE'S BOUNTY OPTIMAL SOLUTIONSBrand 35710Model 4.74H*2.66L*2.66W inchesDimension 0.35 lbWeight
Nature'S Bounty Optimal Solutions 35710 Nature'S Bounty Advanced Hair, Skin & Nails, Argan-Infused Vitamin Supplement With Biotin And Hyaluronic Acid cover
Nature'S Bounty Optimal Solutions 35710 Nature'S Bounty Advanced Hair, Skin & Nails, Argan-Infused Vitamin Supplement With Biotin And Hyaluronic Acid thumb #1Nature'S Bounty Optimal Solutions 35710 Nature'S Bounty Advanced Hair, Skin & Nails, Argan-Infused Vitamin Supplement With Biotin And Hyaluronic Acid thumb #2Nature'S Bounty Optimal Solutions 35710 Nature'S Bounty Advanced Hair, Skin & Nails, Argan-Infused Vitamin Supplement With Biotin And Hyaluronic Acid thumb #3Nature'S Bounty Optimal Solutions 35710 Nature'S Bounty Advanced Hair, Skin & Nails, Argan-Infused Vitamin Supplement With Biotin And Hyaluronic Acid thumb #4Nature'S Bounty Optimal Solutions 35710 Nature'S Bounty Advanced Hair, Skin & Nails, Argan-Infused Vitamin Supplement With Biotin And Hyaluronic Acid thumb #5Nature'S Bounty Optimal Solutions 35710 Nature'S Bounty Advanced Hair, Skin & Nails, Argan-Infused Vitamin Supplement With Biotin And Hyaluronic Acid thumb #6Nature'S Bounty Optimal Solutions 35710 Nature'S Bounty Advanced Hair, Skin & Nails, Argan-Infused Vitamin Supplement With Biotin And Hyaluronic Acid thumb #7Nature'S Bounty Optimal Solutions 35710 Nature'S Bounty Advanced Hair, Skin & Nails, Argan-Infused Vitamin Supplement With Biotin And Hyaluronic Acid thumb #8
8.1We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good Price: $
Save 47% + FreeShipping

Features
  • SUPPORTS BEAUTIFUL HAIR; GLOWING SKIN; AND HEALTHY NAILS (1) - Hair Skin & Nails Rapid Release Softgels contain biotin; vitamins; minerals; antioxidants and other nutrients consistently found in healthy hair; skin and nails
  • WITH BEAUTY-SUPPORTING BIOTIN - Nature's Bounty Hair, Skin & Nails vitamins contain beauty-supporting biotin; a vital nutrient that helps to maintain healthy hair while supporting overall beauty (1)
  • ANTIOIXIDENTS PLUS HYALURONIC ACID - Skin and Hair Nutrients Antioxidants A; C and E Plus Hyaluronic Acid; Laboratory tested and contains no artificial color or flavor; and are free from sugar; milk; lactose, soy; gluten; wheat; yeast; and fish; Sodium free
  • HELPS MAINTAINS HEALTHY SKIN - Vitamin E contributes to skin health (1) and Vitamin C is involved in collagen production and formation; which forms the basis for vibrant skin(1)
  • FROM THE TRUSTED WELLNESS EXPERTS - Natures Bounty Extra Strength Hair Skin and Nails Vitamins are a product of 50 years of dedication to quality and scientific research to make vitamins and nutritional supplements of unrivaled excellence
18

Nature'S Bounty 7431200759 Biotin 10,000 Mcg, 250 Rapid Release Softgels

NATURE'S BOUNTYBrand 7431200759Model 2.0H*4.0L*2.0W inchesDimension
Nature'S Bounty 7431200759 Biotin 10,000 Mcg, 250 Rapid Release Softgels cover
Nature'S Bounty 7431200759 Biotin 10,000 Mcg, 250 Rapid Release Softgels thumb #1Nature'S Bounty 7431200759 Biotin 10,000 Mcg, 250 Rapid Release Softgels thumb #2Nature'S Bounty 7431200759 Biotin 10,000 Mcg, 250 Rapid Release Softgels thumb #3
8.1We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good Price: $$
Save 15% + FreeShipping
Visit Store » KOSLOK ( 4.94 / 5 )

Features
  • Biotin supports healthy hair, skin & nails for Adults.
  • 250 Rapid Release Softgels of 10000 mcg Biotinch
  • Gluten free.
  • One Softgel Provides 33,333% of Daily Value.
  • These Softgels Contain No Sugar, No Artificial Color, No Artificial Flavor, No Milk, No Lactose, No Yeast, No Fish, Non-GMO
19

Sports Research 2724531440651 Vegan Biotin 5000Mcg

SPORTS RESEARCHBrand 2724531440651Model 2.2H*2.13L*2.6W inchesDimension 0.17 lbWeight
Sports Research 2724531440651 Vegan Biotin 5000Mcg cover
Sports Research 2724531440651 Vegan Biotin 5000Mcg thumb #1Sports Research 2724531440651 Vegan Biotin 5000Mcg thumb #2Sports Research 2724531440651 Vegan Biotin 5000Mcg thumb #3Sports Research 2724531440651 Vegan Biotin 5000Mcg thumb #4Sports Research 2724531440651 Vegan Biotin 5000Mcg thumb #5Sports Research 2724531440651 Vegan Biotin 5000Mcg thumb #6Sports Research 2724531440651 Vegan Biotin 5000Mcg thumb #7Sports Research 2724531440651 Vegan Biotin 5000Mcg thumb #8
8.0We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Good Price: $$
FreeShipping

Features
  • ENERGY PRODUCTION SUPPORT - Also known as Vitamin B7, Biotin plays an important role in metabolizing carbohydrates, fats & proteins. This once-a-day formula makes it easier to get the essential micronutrient*
  • HEALTHY HAIR & SKIN - Healthy hair and skin require consistent keratin synthesisthe protein found in our cells. Our biotin supplements give you a chance to increase these production levels naturally, leading to results you can both see and feel*
  • VEGAN CERTIFIED - Our biotin is Vegan Certified and encapsulated in the worlds only non-GMO verified, bovine, and carrageenan-free, Plantgel capsule. Its filler-free, formulated with organic coconut oil, and Manufactured in the USA in cGMP-compliant facilities
  • PREMIUM, POTENT FORMULAS - Take your pick between our High Potency Biotin 2,500 mcg, Extra Strength Biotin 5,000 mcg, and Max Strength Biotin 10,000 mcgall gluten-free, soy-free, and made with cold-pressed 100% organic coconut oil
  • THE SPORTS RESEARCH DIFFERENCE - Founded in Southern California in 1980, Sports Research is a family-owned business born from a passion for fitness and wellness. Our goal is to embrace the sport of life through research-backed products created for every bodyinside and out
20

Natrol 127450 Beauty Biotin 10000Mcg, Dietary Supplement

NATROLBrand 127450Model 4.09H*1.98L*1.98W inchesDimension 0.11 lbWeight
Natrol 127450 Beauty Biotin 10000Mcg, Dietary Supplement cover
Natrol 127450 Beauty Biotin 10000Mcg, Dietary Supplement thumb #1Natrol 127450 Beauty Biotin 10000Mcg, Dietary Supplement thumb #2Natrol 127450 Beauty Biotin 10000Mcg, Dietary Supplement thumb #3Natrol 127450 Beauty Biotin 10000Mcg, Dietary Supplement thumb #4Natrol 127450 Beauty Biotin 10000Mcg, Dietary Supplement thumb #5Natrol 127450 Beauty Biotin 10000Mcg, Dietary Supplement thumb #6Natrol 127450 Beauty Biotin 10000Mcg, Dietary Supplement thumb #7Natrol 127450 Beauty Biotin 10000Mcg, Dietary Supplement thumb #8
8.0We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Good Price: $
Save 13% + FreeShipping

Features
  • Healthy hair, skin, and nails for those low in Biotin and energy support supplement* - Contains one 60 count bottle of Natrol Beauty Biotin 10000mcg Tablets for a 60-day supply
  • Dietary supplement with a high amount of Biotin to support healthy hair, skin, and nails for those low in Biotin and energy metabolism*
  • Each Natrol Biotin tablet offers a delicious strawberry flavor, in fast-dissolve form you can take anytime, anywhere, no water needed.
  • Adults, take one fast-dissolve tablet daily. No water necessary.
  • *These statements have not been evaluated by the Food and Drug Administration; this product is not intended to diagnose, treat, cure, or prevent any disease

FAQ & Notes

Matt Brandon Written By Matt Brandon

During our research, we found more than 406 related products, with prices ranging from $7.03 to $27.89, and most customers would pay around $16 for this type of product.

What are the top brands of Biotin Supplements?

There are 15 brands available for Biotin Supplements, such as Pure Encapsulations, Sports Research, Bronson, Clean Nutraceuticals, Nutricost, Carlyle, Nature Made, Now Foods, Vitboost, Nature'S Bounty, Nature'S Bounty Optimal Solutions, Natrol, Amazon Elements, Nutraharmony, Natureon.

What are the available sellers for Biotin Supplements?

There are 12 sellers available for Biotin Supplements, including Amazon.com ( 4.68 / 5 ), Vitboost ( 4.84 / 5 ), Carlyle ( 4.93 / 5 ), greenBulk ( 4.91 / 5 ), NatureOn ( 5.0 / 5 ), Pattern. ( 4.93 / 5 ), KOSLOK ( 4.94 / 5 ), Clean Nutra ( 4.76 / 5 ), Bronson Laboratories ( 4.93 / 5 ), eSupplements ( 4.89 / 5 ), Sports Research ( 4.92 / 5 ), Molino Co. ( 4.9 / 5 ).

Price comparison of the top 10 Biotin Supplements

*Note: Prices based on historical data.

Price comparison of the top 10 Biotin Supplements highly recommended

*Note: Prices based on historical data.

The Verdict

After thorough consideration, we have selected the product NATURE'S BOUNTY NRT51697 as your preferred option.

As an alternative, we have also compiled a list based on user reviews, and the product NATURE'S BOUNTY OPTIMAL SOLUTIONS 35710 is also worthy of your purchase.