The K18 HeatBounce Conditioning Heat Protectant is a high-performance leave-in built to shield hair from extreme heat while conditioning and strengthening from within. Powered by Resilicore, a protein-inspired technology, it penetrates deep into the cortex to fortify strands rather than just coating the surface. Lightweight yet effective, it softens, detangles, and defends against breakage, keeping all hair types—including extensions—strong, smooth, and ready for styling. Lightweight leave-in formula Safe for all hair types Works on extensions Powered by Resilicore Who is it for? All hair types Anyone using heat tools What does it do? Shields hair from heat damage Reduces breakage after blow drying Strengthens deep within the cortex Softens and detangles hair Conditions while protecting How do you use it? Apply throughout sectioned hair, brushing through to help with even distribution Use on towel-dried hair before blow-drying and on dry hair before hot tools