An intense RECONSTRUCTION treatment in two steps. Reconstructs, fortifies, hydrates and protects hair. It replenishes the active ingredients that have been removed from inside the hair and helps to repair the porosity of the hair cuticle. Apply step 1, leave on for 1 to 3 minutes, do not rinse and then apply step 2, leave on for 5 to 10 minutes and rinse thoroughly. It can be activated with heat (iron, sauna, sun exposure).