Difeel Rosemary & Mint Conditioner is infused with nourishing Biotin. Biotin plays an important role in the health of your hair, skin, and nails. A lack of Biotin can lead to hair loss. FOR STRONGER, FULLER AND THICKER HAIR Strengthening formula leaves hair stronger, fuller, and thicker while encouraging healthy hair growth. INVIGORATING FORMULA Rosemary & Mint Conditioner works to keep your hair color vibrant while giving your hair manageability, softness and shine.