Redken Acidic Perfecting Concentrate Leave-in Treatment provides heat protection up to 230 degrees, smoothes, tames frizz, adds shine and intensely conditions to help to reduce hair breakage. This pH-balancing leave-in Treatment is specifically formulated with an acidic pH to help to defend against the potential negative effects that can be caused by hair coloring, lightening and heat styling. The result? Hair that looks and feels healthy! Key benefits: Up to 11x smoother hair.* Tames frizz and adds shine. Heat protection up to 230°C* Up to 78% of split ends appear reduced