The Kérastase Genesis Défense Thermique Blow Dry Primer is a fortifying heat protection fluid specially formulated for weakened hair that is prone to breakage and fall. Its lightweight milky texture delivers intense hydration and a powerful shield against heat up to 220°C, keeping hair smooth, frizz-free, and never weighed down. Whether applied to damp hair before blow-drying or to dry hair for instant frizz control and softness, this primer works to reinforce the hair fiber from within while leaving a silky, polished finish. Enriched with Kérastase's signature Genesis technology, it targets the root causes of hair weakening to visibly reduce breakage with every use, making it an essential step in any heat styling routine for stronger, healthier-looking hair.
