Smooth Extending Shampoo supports the effect of the in-salon Supreme Keratin service.It nourishes and moisturizes the hair, leaving it smooth, healthy-looking, and shiny.Use daily with Smooth Conditioning Gloss Mask and Shine Drops for a long-lasting result, and blow-dry the hair smooth using a suitable styling brush after every wash for smooth, silky hair. What is Supreme Keratin:Reinforcing and strengthening hydrolyzed KeratinNourishing Vitamin CMild acid pH 3.2-4.5 (comparable to a regular hair treatment)Human hair is made out of 95% Keratin. Keratin is a combination of various amino acids. In the hair Keratin has different forms:Outside: Flat Keratin cells organized as roof titlesInside: Fibres made of keratin coils, embedded in a matrix made of keratin 'cement'How this works:Replenishing the hair structure to promote vital and healthy-looking hairResurfacing the cuticle layers in order to tame and smooth unruly, frizzy hair and to enhance shineDurable re-shaping of the hair to improve manageability