Kerastase Resistance Ciment Thermique Resurfacing Reinforcing Milk protects weakened, damaged hair from the aggressions of blow-dry and makes hair easier to style. Instantly, hair surface is smoothed while hair fiber is strengthened from within. Helps to protect and repair hair from the stress of heat styling (blow dryers, straightening or curling irons). Adds visible long-lasting shine and smoothness. Strengthens and fortifies. Glacage Thermo-Seal: smooths hair and adds shine, makes hair easier to style. Glucose Polymer: a filing sugar, a resurfacing active ingredient which recreates the hair's external protective layer, avoiding cracks and split ends.