Kérastase Resistance Bain Force Architecte is a daily shampoo designed for weak, damaged or brittle hair. With daily use, this product gently cleanses hair while strengthening & smoothing from root to tip, making it the perfect solution for thirsty, weakened hair that's suffering as a result of heat styling or dying. Kérastase's strengthening shampoo has been specially designed to clean, repair & fortify damaged hair at erosion levels 1-2, which is Kérastase's scientifically formulated scale for analysing hair damage. With the active ingredients Vita-Ciment® – which contains Intra-Cylane, Ceramide R & Pro-Keratin – & Sève de Résurrection, this shampoo rebuilds hair from within, strengthening hair to prevent brittleness, split ends & breakage. Meanwhile, Kérastase's innovative cleansing formulas effectively lift away dirt & impurities. Resistance Bain Force Architecte is designed for daily use. To effectively regenerate & reconstruct the hair, apply as you would your regular shampoo. Work the product evenly throughout the hair, massaging into the scalp & emulsifying into the lengths. Rinse thoroughly & style as normal to reveal noticeably smoother, stronger & rejuvenated hair.