Biotin is another name for vitamin B7 and naturally occurs in food, like meat and eggs. It plays a role in your metabolism along with other bodily functions. I used to have thin hair which was damaged and stunted in growth. Some time ago, my friend suggested consulting with a doctor through Ongo Care telehealth. I consulted with that telehealth platform and got a prescription for biotin shampoo and supplements. It boosted the quality of my hair and repaired them from the root. So biotin is a vitamin that is essential for hair and nail health. Biotin in the shampoo is an easy way to introduce it directly into the scalp. With it on your scalp, it feels better, thicker, and more attractive.