This highly concentrated serum treats weakened hair fiber to reduce damage and split ends. Its melting and lightweight gel-in-oil texture quickly penetrates the hair to give softness, shine and suppleness. Hair is protected from heat up to 430°F for up to 40 flat iron passes. Repairing and protective serum For damaged to very damaged hair Thermal protection up to 430°F Silicone-free No greasy finish 99% natural-origin formula 60% reduction in split ends 89% more softness (after two weeks) 86% more shine (after two weeks)