Biotin, also known as vitamin H, is a part of the B vitamin group. It is an important factor in the growth of tissue and the proper functioning of the oil glands. A biotin deficiency can lead to the formation of dandruff and crusts in the scalp. Biotin is essential for hair growth and scalp health. Aubrey features Biotin in our Biotin Repair Shampoo, Conditioner, and Scalp Tonic because of its profound effects on the scalp. Fine, thinning hair types benefit from biotin as a hair care ingredient because it energizes the scalp, promotes hair growth, and adds fullness.