K18 HeatBounce defends hair against extreme heat. This conditioning heat protectant is designed to shield hair up to 450°F/232°C. Patented ResiliCore™ technology penetrates the hair cuticle to defend against styling heat, color fade, mechanical stress and UV damage. It detangles for smoother, more resilient locks, and leaves even damaged, color-treated or textured hair feeling soft and weightless.