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The Best Biotin Supplements for Healthier Skin, Hair, and Nails
Written By Supplement Institute Review Team
Biotin, also known as vitamin B7, plays a significant role in energy production and the metabolism of fats, proteins, and carbohydrates — but not everyone gets enough of it. While the vitamin is found in many foods, biotin supplements can address deficiencies that cause hair brittleness, skin issues, and weak nails. Given their healing power, it is not wonder biotin supplements are widely celebrated across the health and wellness sector.
Sorting through the saturated supplement market can be tricky, though, which is where our review team comes in. We have conducted rigorous research on the best biotin supplements of 2025 to bring you a condensed list of top performing brands. We’ve concluded that the Nutricost Biotin Supplement for Women is the best overall, due to its purity, potency, and bioavailability. Keep reding to learn more about Nutricost’s formula and other top-rated options.
Detailing the Best Biotin Supplements of 2025
Nutricost Biotin Supplement
Best Overall
The Nutricost 10,000mcg Biotin Supplement for Women stands out as the best overall option, formulated to support the nervous system, protein growth, and hair, skin, and nail health. This product isn’t just a biotin supplement, it’s a comprehensive beauty-boosting capsule formulated to benefit women’s health. It packs 10,000 micrograms (mcg) of biotin, along with folate and marine collagen. For aging or thinning hair, this high-potency biotin supplement outperforms others, tackling weak hair with vigor and restoring its youthful volume and shine. It is also ideal for accelerating nail health, bolstering brittle nails to become stronger and healthier over time.
The formula of this biotin supplement is gluten-free, vegetarian, and non-GMO, ensuring clean, uncompromised nutrition. This pick includes 120 capsules for up to four months of usage. If you’re looking for a supplement with a neutral taste, they are unflavored for easy consumption. When it comes to quality and safety, Nutricost is committed to meeting the Good Manufacturing Practices (GMP) regulations and thorough third-party testing. So, if you’re looking for a high-quality, trustworthy biotin supplement to boost your hair and nail health, this is the top choice on our list.
Key features/specs
| Biotin content: 10,000 mcg per capsule | |
| Folate dosage: 333mcg in each capsule | |
| Marine collagen quantity: 100mg per capsule | |
| Gluten-free and non-GMO ingredients | |
| Tested by an independent third-party | |
| Manufactured in an FDA-registered facility | |
| Produced according to GMP standards |
Lunakai Biotin Supplement
Best Non-Capsule Option
Looking to boost the growth and strength of your nails, skin, and hair without having to take a daily pill? Try the Lunakai 5,000mcg Biotin Gummies With Vitamins. These delicious, non-GMO gummies are chewy and naturally cherry flavored for a tastier, simpler-to-swallow alternative to capsule supplements. The proprietary 5,000 mcg formula has gained renown for promoting rapid hair growth and enhancing nail strength. This pick is also vegan, providing sufficient amounts of vitamin B7 for anyone who might not be getting enough from common dietary sources such as meat and eggs.
Coupled with the added benefits of vitamins C and E, these biotin gummies do more than just enhance hair and nail growth; they support overall skin health, too. This powerful combination of essential vitamins also helps boost your overall wellness, from metabolism to immune system. So, if you’re seeking a hair, skin, and nail supplement that offers a range of other health benefits and is pleasant to take every day, consider Lunakai’s biotin gummies. They’ve earned their place as a top contender and receive excellent reviews from customers.
Key features/specs
| Infused with 5,000mcg of biotin | |
| Enriched with vitamins C and E | |
| Vegan, GMO-free formulation | |
| Allergen-free: No gluten, soy, or corn | |
| Contains 60 cherry-flavored chewable gummies | |
| Made in the USA |
Nature’s Bounty Biotin Supplement
Best Allergen-Free Formula
Free of many allergens and artificial ingredients, the Nature’s Bounty 10,000mcg Biotin Supplement can rapidly enhance hair growth, support healthy skin, and fortify nails through its high-quality formula. This pick isn’t just a beauty supplement; it also plays a vital role in maintaining overall health. As biotin aids in keeping the nervous system balanced and assists in energy metabolism, this supplement actively works to convert nutrients into cellular energy. Without artificial flavors or sweeteners, milk, gluten, fish, or sodium, this vegetarian option only includes the most essential ingredients for maximum health benefits. It promotes your beauty and well-being naturally, without introducing unnecessary additives.
With a generous 10,000 mcg of biotin in each of the 120 supplements, this product offers an effective way to meet your daily vitamin B7 requirements. These rapid-release softgels are praised for being quickly absorbed to achieve rapid hair growth, stronger nails, and clearer skin. It’s also popular among customers looking for a budget-friendly option for biotin supplements. Since this supplement does more than make you look good, but also makes you feel good by supporting your immune system and boosting energy levels, this product balances beauty and health.
Key features/specs
| Includes 10,000 mcg of biotin per serving | |
| Comes in rapid-release softgel form | |
| Non-GMO formula | |
| Free from gluten, sugar, lactose, and other allergens | |
| Contains no artificial flavors or sweeteners | |
| Manufactured in facilities that meet FDA regulations | |
| Product of 50 years of dedicated scientific research |
Carlyle Biotin Supplement
Most Affordable
If you’re shopping for supplements on a budget but don’t want to compromise on quality, look no further than the Carlyle 10,000mcg Biotin Supplement. This budget-friendly option fortifies your daily nutrition regime with its 250 fast-dissolve tablets made with a high-potency formula. Notably, this choice is vegetarian, non-GMO, and gluten-free, ensuring that it integrates well into diverse dietary preferences. Additionally, the quick-dissolving tablets offer unmatched convenience ideal for those who need an efficient nutrient boost. Start the day with one quick pop, and the supplement dissolves swiftly in your system.
In terms of its effects, this biotin supplement caters to your hair health, promoting fuller, thicker locks. Acting as a catalyst, it accelerates the process of hair growth, fostering a healthier, shinier, and voluminous mane. But the benefits of this biotin supplement go well beyond hair care. It works wonders in boosting nail health, strengthening them to prevent accidental and unfortunate breakage. So whether you’re trying to add life to your hair, strengthen your nails, or simply boost your overall health, this pick is an excellent addition to your health regimen and won’t break the bank.
Key features/specs
| Includes 10,000 mcg of biotin | |
| Fast-dissolving tablets for rapid absorption | |
| Features a natural berry flavor | |
| Vegetarian-friendly ingredients | |
| Free of gluten, milk, and preservatives | |
| Non-GMO formula with no artificial flavors |
Nature Made Biotin Supplement
Best Pharmacist-Recommended Brand
When it comes to reputation, the Nature Made 5,000mcg Biotin Supplement is hard to beat. As a highly recommended vitamin and supplement brand, the United States Pharmacopeia (UCP) has closely tested and verified this product’s ingredients, potency, and manufacturing processes, ensuring its of the highest quality possible. Accordingly, the formula is free of artificial flavors, synthetic dyes, and gluten, making it suitable for health-conscious consumers.
As a result, this biotin supplement is responsibly made to bolster the health of your hair, skin, and nails. It stands out as an effective shield against hair loss and breakage, while simultaneously encouraging nail health and growth. Its meticulously derived from quality ingredients also helps support energy metabolism. Taking just one of the 120 softgels each day, along with water and a meal, can greatly benefit your overall health. So, if you’re searching for a reliable, potent, and trustworthy product that’s popularly recommended by pharmacists, this Nature Made biotin supplement could be an excellent way to strengthen your hair and nails.
Key features/specs
| Biotin content: 5,000 mcg per softgel | |
| Quantity: 120 softgels per bottle | |
| Free from gluten, artificial flavors, and synthetic dyes | |
| Best taken daily with a meal | |
| USP-verified and pharmacist-recommended formula |
Buying Guide: Biotin Supplement
Biotin supplements have become the go-to method for many people seeking to improve the health of their hair, skin, and nails. However, with so many brands and types flooding the market, it can be difficult to find the best supplement for your needs. To help, our review team put together this detailed buying guide on how to assess different biotin supplements and make an informed decision.
Potency
When evaluating various biotin supplements, the first thing you will notice is the range of potencies available. Supplements may range from as low as 500 micrograms (mcg) to as high as 10,000 mcg per serving, or the equivalent of 0.5 milligrams (mg) to 10 mg. However, a higher dose doesn’t necessarily mean superior benefits. Too much biotin could lead to unwanted side effects like skin rashes or digestive issues. Generally, a daily dose of 2,500 mcg is ample for most adults, according to WebMD, but those with biotin deficiencies might benefit from higher potency formulas. As with any other supplement, it’s best to consult with your healthcare provider to determine what dosage is best for your needs.
Form
Biotin supplements come in various forms — tablets, capsules, gummies, and even liquid. Tablets and capsules are the most common forms, often available in higher potencies. Gummies, flavored and easy to chew, may be more appealing to those who dislike swallowing pills. Liquid supplements offer a quick absorption rate but may not be convenient for everyone. Choose a form that aligns with your preference and lifestyle.
Additional Nutrients
While pure biotin supplements are available, many brands incorporate additional nutrients like vitamins C and E and other minerals. These multi-nutrient supplements can offer wider health benefits, promoting overall wellness alongside improvements to hair, skin, and nail health. However, ensure the supplement doesn’t contain nutrients you are allergic to or could interact with your current medications.
Brand Reputation
Not all biotin supplements are created equal. The brand’s reputation often speaks volumes about the product’s quality. Look for brands that are transparent about their sourcing and manufacturing processes, follow Good Manufacturing Practices (GMP), and use third-party testing. Customer reviews and ratings can also provide insight into a product’s efficacy and any potential side effects.
Label Transparency
Biotin supplements should clearly list all the ingredients, including any fillers, binders, or artificial colors or flavors. Some might contain allergens like gluten, soy, or dairy. A supplement with fewer ingredients often means less chance of unwanted additives or allergens. Transparency in labeling shows that the company takes consumer safety seriously.
Absorption Factor
Biotin is a water-soluble vitamin, which means the body doesn’t store it and excess amounts are excreted. Some supplements include ingredients like black pepper extract to enhance the absorption and utilization of biotin. Consider supplements with such absorption-boosting ingredients to maximize the supplement’s benefits.
Price
While it’s tempting to opt for the cheapest option, the old adage “you get what you pay for” often holds true for supplements. Higher-priced supplements typically come from reputed brands, undergo rigorous testing, and offer higher potency and purity. Still, expensive doesn’t always mean better. Compare prices across brands, keeping the quality and quantity in mind.
Biotin Supplement FAQs
What are the benefits of taking a biotin supplement?
Biotin supplements are known to support healthy skin, hair, and nails. They also aid in metabolism and energy production.
Can I take a biotin supplement with other medications?
It's best to consult with your healthcare provider before taking any new supplement, including biotin, if you're currently on medication. This is to ensure there are no potentially negative interactions.
Are there any side effects of taking a biotin supplement?
Biotin is generally considered safe and well-tolerated, although some people may experience mild side effects like nausea, cramping, or diarrhea. If you experience any severe or ongoing side effects, stop taking the supplement and contact your healthcare provider.
How long does it take for a biotin supplement to work?
The effects of biotin supplements may not be immediate and can take several weeks or months to become noticeable. This varies on an individual basis.
How should I store my biotin supplement?
Biotin supplements should be stored in a cool, dry place out of direct sunlight. Always make sure the bottle is tightly sealed.
Can I take a biotin supplement if I am pregnant or nursing?
Pregnant or breastfeeding women should always consult with their healthcare provider before starting any new supplement, including biotin.
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