Biotin, a B vitamin that helps stimulate keratin production, has a reputation for being beneficial for your hair, skin, and nails, so it makes sense that you’d be interested in using a biotin shampoo. But the best biotin shampoos are complimented by other, high-performing ingredients to promote strong hair and a balanced scalp, like “zinc to decrease inflammation; ketoconazole to fight the hair-thinning properties of DHT; antioxidants to minimize free radical damage; castor oil or olive oil to increase scalp circulation and condition the scalp and hair; and keratin, amino acids, and pantothenol to strengthen the hair,” explains Dr. Peterson Pierre, M.D., a dermatologist who spoke to Elite Daily for this article.

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