BIOTIN LEAVE-IN CONDITIONER: Fortified, strengthening formula with Biotin, a water-soluble vitamin that's a part of the vitamin B family. . . . Your body needs biotin to help convert certain nutrients into energy. HAIR GROWTH THAT WORKS: Biotin plays an important role in the health of your hair, skin, and nails. A lack of Biotin can lead to hair loss. LEAVE IN CONDITIONING TREATMENT: Penetrates hair and scalp and deeply nourishes to promote healthy hair growth. HAIR SERUM DRY HAIR: Makes hair stronger, fuller, and thicker-looking. Biotin can improve overall hair quality, thickness, and shine. HAIR LOSS LEAVE IN TREATMENT: Our Pro-Growth Biotin Leave-in Conditioning Spray is sulfate-free, paraben-free, phthalate-free. It works to keep your hair color vibrant while giving your hair manageability, softness, and shine. Sulfate Free - Paraben Free - Phtalate Free - Color Safe Formula DIRECTIONSSpray generously on wet or dry hair and comb through. Do not rinse.