Supports healthy skin, hair and nails*Biotin-8 offers a high concentration of biotin, a B vitamin that supports fingernail strength, skin, hair, and nerve health, as well as healthy blood sugar metabolism.*Biotin-8 provides a high amount of biotin (also sometimes called vitamin B7) per capsule. In a clinical trial for Biotin, 45 patients with brittle nails received oral supplementation of 2.5 mg biotin for 1.5-7 months. Ninety-one percent showed "definite improvement," exhibiting firmer, harder fingernails after an average of two months of supplementation.* Biotin also supports healthy skin, hair, and nerve function.*Thorne's logo, text, trademarks, graphics, videos and photo images are the property of Thorne and are used with permission. Copyright © 2023*FDA Disclaimer: The information about this product and statements made are provided by the manufacturer, except customer reviews which are not evaluated. See www.thorne.com for information about the relationship between this product and any claims made. Results may vary from person to person based on body size and other factors, and the effectiveness is not guaranteed for you. Always seek the advice of your healthcare professional about taking dietary, nutritional, herbal or homeopathic supplements.