Kerastase Genesis Defense Thermique Blow Dry Primer For Straight, Curly and Coily Hair. This primer is your hair's guardian against heat damage during styling. Its advanced formula creates a resilient shield that safeguards your hair from the potential harm of heat tools and external stressors. Elevate your hair care routine with Kerastase's expertise and the formidable strength of Genesis Defense Thermique Serum. Embrace the confidence of styling while ensuring your hair's health and beauty. With every application, you invest in the vitality and resilience of your hair.