The active ingredient Bio. Restore Complex® replaces amino acids and nutrients that are vital to restoring the balance of healthy hair. It repairs the damage caused by chemical, physical and external factors. With continued use, it repairs the cuticle while penetrating the cortex, increasing strength and flexibility to the internal structure of hair and restoration of each hair strand. Contains added heat protection to guard against styling damage. Enriched with certified organic yerba mate extract, which promotes hair growth by directly stimulating the follicles and strengthening the hair, restoring volume and bounce. How to use Step one: Apply 1-3 pumps into palms of hand. Step two: Rub together and apply to damp or dry hair. Step three: Comb through and leave in. Step four: Style as usual.