Product Overview Dry & sensitised hair in need of intense nourishment? Our stylists favourite thermo-reactive masque provides beautiful softness & radiant shine. Benefits Softer, shinier hair that is easier to untangle is achievable with this thermo-reactive masque. The expert-designed formula provides hair with intense, essential nourishment. Key Technology In three steps, the masque works to intensely nourish hair. Kérastase’s Deep Nutrition nourishing agents operates in the most sensitised areas of the fibre, whilst heat activates the thermo-reactive formula, trapping the nourishing elements deep inside the hair fibre The heat-activated formula then help prevent dryness.