System 2 strengthens hair against damage and breakage and provides stronger, fuller looking hair with a healthy shine. Cleans, optimizes and nourishes hair and scalp.professional care treatment for thickening natural, visibly thinning hair.for a strengthened hair structure and protection against hair breakagefrees scalp and hair from sebum, fatty acids and environmental depositshelps to improve hair resistance and regulate moisture balancefor a refreshed scalpDirections: Gently massage into hair and scalp. Rinse thoroughly.