Customer Ratings & Reviews

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4.6

Based on 76,924 ratings

59,344

10,612

4,863

1,232

873

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What customers say

(3,808)

iHerbCustomer

Silver

Posted on Oct 5, 2025

Israel

110

105

Good product

Verified Purchase

Simple product, quality, normal size, perfect packaging. Product benefits: A delicate and pleasant scent that lasts a long time, really adds to the feeling of freshness. The quality is noticeable from the first use - a pleasant texture, absorbs well and leaves the skin smooth. I was also surprised by the size - a large and affordable bottle, lasts a long time. Highly recommend! Perfect texture, and a pleasant scent. High quality. Regular use "

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iHerbCustomer

Posted on Nov 2, 2025

Japan

100

To prevent hair loss.

Verified Purchase

I think it's best for people who don't need minoxidil to take this. It really is a preventative measure. Hair loss has definitely decreased when I take a bath or use a hair dryer. I no longer have any hair loss that was visibly falling out. It contains a lot of ingredients and is reasonably priced, so I recommend it.

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kingsaiajay

Posted on Oct 25, 2025

India

Excellent biotin for hair and nail growth

Verified Purchase

This Natrol Biotin is one of my favorite supplements. After taking it consistently, I’ve noticed my hair growing faster and looking shinier, and my nails have become much stronger. The tablets are small and easy to swallow, and the 200-count bottle lasts a long time. Great quality and value — perfect for anyone looking to support healthy hair, skin, and nails.

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BACK-DOOR

Gold

Posted on Oct 19, 2025

United Arab Emirates

689

Verified Purchase

Excellent Quality, Fast Delivery & Perfect Packaging! I’m extremely satisfied with this product from iHerb! The quality is absolutely amazing — you can really feel the difference compared to other brands. The packaging was neat, safe, and well-sealed, ensuring the product arrived in perfect condition. Shipping was super fast and reliable, even faster than I expected! Everything came fresh, authentic, and exactly as described on the website. I also appreciate how iHerb always delivers genuine products with great expiration dates and professional packaging. Highly recommend this item to anyone looking for top quality, great value, and trusted delivery service. I’ll definitely order again soon!

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Aisha93beuaty

Gold

Posted on Aug 17, 2025

Oman

324

233

1,556

good

Verified Purchase

Excellent Beauty Vitamin, natural ingredients and a large quantity sufficient for about two months. The quality is excellent. The benefit increases hair length and gives freshness, vitality and a beautiful effect on the skin and general health with continuous use. It is an excellent antioxidant and does not cause stomach sensitivity. The package is easy to use. Cons: The pills are very large and difficult to swallow. I have to divide them if I use it.

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iHerbCustomer

Gold

Posted on Aug 13, 2025

United Arab Emirates

858

251

Good

Verified Purchase

’ve been using these for over a month now, and I can honestly say I feel a difference. My energy levels are more stable throughout the day, and I don’t feel that afternoon crash I used to. The tablet is a bit large, but it goes down easily with water. I also like that it doesn’t upset my stomach, even when taken without food. Great ingredient list, no weird fillers, and the price is super reasonable compared to similar products. Definitely ordering again!

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iHerbCustomer

Gold

Posted on Aug 9, 2025

Kazakhstan

460

Great

Verified Purchase

Biotin This is a quality supplement made from good ingredients Dosage 5000 units in one capsule Biotin is a useful supplement for healthy beauty of hair, nails, skin, so some cosmetologists call it the vitamin of beauty The packaging is beautiful and durable And it also helps maintain a healthy weight, Reduces the percentage of fat in the liver, helps break down and absorb fats

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iHerbCustomer

Posted on Jul 29, 2025

Saudi Arabia

150

All

Verified Purchase

Key Benefits: Supports Healthy Hair, Skin, and Nails: Biotin contributes to improved hair health, reducing hair loss and increasing its thickness. Improves the appearance of skin and reduces dryness. Strengthens nails and reduces breakage. Boosts Energy Metabolism: Biotin helps convert carbohydrates, fats, and proteins into energy, improving overall energy levels. Suitable for Vegetarians: This product is 100% vegan and GMO-free, making it suitable for vegetarians. Allergen Free: Free from gluten, dairy, eggs, peanuts, wheat, soy, yeast, artificial colors or flavors, added sugar, starch, and preservatives.

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huniglowup

Posted on Oct 14, 2025

Saudi Arabia

Verified Purchase

One of the best companies I have taken biotin from. It literally made an unnatural difference for me. If you are taking biotin, do not hesitate to go to Nitrol Company 👌🏻😍

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Anna

Silver

Posted on Aug 14, 2025

Ukraine

146

Verified Purchase

Biotin, also known as vitamin B7 or vitamin H, is a key component in maintaining healthy hair, skin, and nails. It helps strengthen the structure of keratin, the main protein that makes up hair. Natrol offers biotin in tablet form in a variety of strengths, making it accessible to people with different needs. It is typically available in 1,000 mcg, 5,000 mcg, and 10,000 mcg doses.

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