This Floractive Professional W One Premium hair treatment offers multiple benefits including hydrating hair, providing healing properties, and delivering intracellular nutrition. It is a lightweight formula designed for professional use. To use, wash hair if greasy, moisten chemically treated/colored/sensitized hair with Serum Illuminador (do not use on healthy/virgin hair), let the product saturate for 60 to 90 minutes depending on hair texture, and then rinse 10% of the product at the backwash. Compatible with: Chemically treated hair, colored hair, sensitized hair.