Strengthening and Nourishing - Our Difeel Rosemary & Mint Hair Mask 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 - Our Strengthening formula leaves hair stronger, fuller, and thicker while encouraging healthy hair growth. | Invigorating Formula - Our Rosemary & Mint Hair Mask works to keep your hair color vibrant while giving your hair manageability, softness and shine. | Made with Natural Ingredients - Sulfate Free - Paraben Free - Phthalate Free - Color Safe Formula | Hair Strengthening Mask - Easy Difeel Packaging - Made in USA