Incredible Difference Between Hair Color Developers Ideas. When mixed with hair dye or bleach, it lifts the hair cuticle, allowing color to penetrate and change shade. The hydrogen peroxide opens the hair cuticle.
11/24/2023 what is developer & what exactly does it do? Web developer is, quite simply, hydrogen peroxide. If you didn’t mix developer with your hair dye, the color molecules would not be able to penetrate the hair and would just wash right off.
