RE:UNITE SILKY:SMOOTH Heat Activator is for frizzy/unruly hair in need of smoothing and repairing. This leave-in spray works to deliver a powerful Heat-activated Polymer that provides an invisible barrier around the cuticle to seal in moisture and nutrients while locking out frizz caused by humidity. Infused with rich ingredients like Macadamia Nuts, Vegetable Fats and Oils, this formula detangles and softens the hair while providing UV protection. It’s also safe for hair extensions and to add on after chemical services to help lock in colour, repair damage and seal the cuticles. The result is dramatically smooth and shiny hair that lasts for days, even after a few washes!