Davines NaturalTech Nourishing Keratin Booster Superactive is an in-salon Restructuring Booster Treatment. Features Benefits: A professional concentrate to be added to the Nourishing Keratin Wonder, when the hair is extremely damaged and needs extra reconstruction. This cocktail of active ingredients enriches the treatment and enhancing its repairing and nourishing action. Even the most damaged hair will result immediately compact, manageable, soft and shiny. The Keratin Booster cannot be used on its own because it is a concentrate of B iacidic B ond C omplex, vegetal keratin and conditioning agents. It must be combined with Keratin Wonder Superactive, to boost the effect on the hair and to avoid any heaviness on the hair.