Nioxin 3D Expert Color lock is a colour-sealing treatment with an added densifying, reinforcing and anti-breakage action.Formulated with NioPROTEC technology, it helps mantaing a long lasting colour by neutralizing the alkaline and oxidizing residues on the hair, and it guarantees a healthier hair, reinforced against breakage.How to use:-Nioxin 3D Expert Color lock immediately after rinsing the colour with water only, before shampooing.Dispense and massage evenly on colored hair.Leave on 3 to 5 minutes and rinse thoroughly.Wash your hair with the three-phase Nioxin Syst.