Cleanser is your shampoo for the 3-step care system.professional care treatment for thickening natural, subtly thinning hair.for a strengthened hair structure and protection against hair breakagefrees scalp and hair from sebum, fatty acids, environmental depositsrefreshes the scalp and increases hair volumeincreases the diameter of each hairApplication: Gently massage the cleanser into the hair and scalp, then rinse thoroughly.