Kérastase Chroma Absolu Sérum Chroma Thermique, 150 ml, Heat Protection for Women, The Kérastase Chroma Absolu Sérum Chroma Thermique heat protection product gives your hair effective protection against heat damage. Characteristics: effective protection during heat styling prevents frizzy hair leaves hair smooth and soft to the touch adds hydration and shine How to use: Spray an appropriate amount onto hair before blow drying, curling or straightening.