Schwarzkopf PH Neutralizing Treatment is a post-color treatment that stops the oxidation process during a color service. It neutralizes and strengthens hair by smoothing the hair fiber. The color retention is therefore maximized in 30 seconds. In addition, the treatment helps to detangle the hair after a color service. Features : Neutralizes the ph Protects against color fading Smooths the hair fiber How to use : Apply 2 to 3 pumps of the product after shampooing Leave on for 30 seconds Rinse thoroughly