Kérastase Discipline Kératine Thermique Leave-In Smoothing Treatment – 150ml Premium leave-in blow-dry treatment designed for unruly, frizz-prone hair. This smoothing taming milk helps control frizz, protect against heat styling, and improve softness while making blow-drying easier. Formulated with Ceramide 1000, this lightweight leave-in treatment helps smooth the hair fibre and improve manageability without heaviness.