Kérastase Resistance Force is a range specifically formulated for chemically treated or naturally weak hair. Hair is left stronger, smoother, revitalised & protected from daily aggressors. This heat-activated reconstructing milk helps to protect hair from the stresses of heat styling. Vita-Ciment strengthens & fortifies the hair fibre from within & Vita-Topseal resurfaces & smooths as it forms a protective barrier against environmental aggressors.