Customer Ratings & Reviews

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4.7

Based on 47,385 ratings

38,416

5,974

2,207

480

308

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What customers say

(5,283)

Antonio

Silver

Posted on 6/04/2026

Australia

188

260

Mega Dose!

Verified Purchase

For the price, the quality is quite surprising. The main ingredient is a high-potency 10,000 mcg dose, which is a major benefit for anyone looking to strengthen their hair and nails. I noticed a visible improvement in nail thickness after a few weeks, and the brightening effect on my overall complexion was a nice bonus. The package comes with 120 small tablets, so the size of the bottle is very compact and easy to store. One benefit is that the tablets themselves are tiny and easy to swallow compared to large capsules. It's a straightforward, effective supplement that delivers exactly what it promises without any unnecessary bells and whistles

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iHerb Customer

Posted on 2/10/2025

Australia

Good for hair loss and nails

Verified Purchase

I tried this to help grow my hair as it was thinning. I found that my hair looked healthier and nails were growing faster and had to cut them more frequently. The quality is superior to other brands. I now take 1 tablet every 2nd day and can see a positive difference on my health. They are easy to swallow and are of a good size.

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Jory

Posted on 5/03/2026

Saudi Arabia

Biotin

Verified Purchase

Biotin is known to support healthy hair and nails. I started taking it regularly as part of my routine. After some time, I noticed my nails became stronger. It is easy to take and fits well into my diet. Overall, it is a useful supplement for beauty support. Good size and packed good for hair nails

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iHerbCustomer

Posted on 8/02/2026

Israel

Verified Purchase

Great vitamins! My hair loss has decreased! My nails have become stronger. I can't say anything about my skin yet, as I'm not sure yet! I'll add a review: my hair has grown new and a lot. I'm almost done with the three months and ordered new ones. I'm seeing results.

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Nuzuray

Silver

Posted on 15/01/2026

Saudi Arabia

118

126

biotin

Verified Purchase

I have used this for 3 months now. I see the benefits of it in my hair and skin.. The package was good. Seems like a good quality ingredients. Size is good for 2 months. It has no taste. I have noticed improvements in my hair strength and nails. supports many parts of your body, including your nervous system, liver, eyes, hair, and skin. It helps the enzymes in your body carry out their jobs and keeps cells working as they should.

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iHerbCustomer

Gold

Posted on 1/04/2026

Japan

414

103

High-dose vitamins that are easy to incorporate into your routine to support hair and nail health.

Verified Purchase

Each capsule contains a high dose of 10,000 mcg, making it easy to take even on busy days. The capsules are small and easy to swallow, making it easy to incorporate into your daily routine. I feel that the condition of my hair and nails has gradually improved, and it's convenient for daily care. However, due to the high dose, some people may experience indigestion or mild discomfort depending on their constitution. The effects are gradual, and I felt that it takes several weeks to several months of continuous use.

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iHerbCustomer

Silver

Posted on 25/12/2025

Oman

172

104

265

Verified Purchase

Honestly, this is the first time I've taken biotin in such a high dose. I'm used to 1000 mcg, so it requires a lot of food and water. It's best to consult a doctor if you're taking this high dose because the body's normal requirement for biotin is only 500 mcg. It's also preferable to take it with orange juice because it speeds up its absorption and gives a stronger result.

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Yahya

Posted on 19/12/2025

Saudi Arabia

The secret to healthy hair and nails... excellent results and high quality

Verified Purchase

I bought this product because I have great confidence in the quality and purity of its ingredients. My main goal was to care for my hair and strengthen my nails, which were breaking easily, and I really noticed a significant difference. The most important benefit I experienced after consistent use was a noticeable improvement in skin radiance and hair follicle strength. The product is also a key supporter of collagen production in the body. Biotin is also known for its effectiveness in alleviating seborrheic dermatitis, which I noticed an improvement in. The packaging is secure, and the generous amount lasts a long time. The tablets are small, easy to swallow, and have no unpleasant taste. I highly recommend it to anyone who wants to take care of their beauty and health from the inside out.

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Ellenka

Posted on 3/11/2025

Ukraine

Beauty and health from within

Verified Purchase

💊 Biotin 10,000 mcg (21st Century) Biotin is a B vitamin, also known as vitamin H or B7. It plays a key role in maintaining beauty and health from the inside 💫 ⸻ 🌿 Main benefits of biotin • Supports the health of hair, skin and nails - promotes their growth, strengthening and shine. • Participates in the metabolism of fats, carbohydrates, glucose and amino acids - helps the body obtain energy from food. • Promotes normal cell growth and tissue repair. • Supports the functioning of the nervous system and metabolism. ⸻ 🌸 Who can benefit from biotin • Those who notice hair loss or brittleness. • With weak nails or dry skin. • Those who often feel tired, stressed or have an unbalanced diet.

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iHerbCustomer

Posted on 10/10/2025

Japan

It makes my hair fluffy.

Verified Purchase

My hair stands up better! I want to keep taking this! My hair used to be dull and shiny when I was feeling down, but now it's shiny again, and since I started taking this, it no longer gets caught when I comb it with my hands. I think the quality of my hair has improved!

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