Oxidising

Such components trigger or accelerate oxidation reactions in the cosmetic formula. In practice, this is especially important in hair and oral products.: They help lighten natural pigment, are involved in the formation of shade during persistent staining, and can contribute to teeth whitening by affecting colored compounds. For the skin, such substances are usually not needed as a care asset, but in special products they affect the chemical result of the procedure, rather than moisturizing or softening. According to Cosmetics Info, oxidizing agents in cosmetics are used to form dyes in oxidative hair coloring and to lighten stains on teeth; PubChem also describes hydrogen peroxide as a strong oxidizing and whitening agent. (cosmeticsinfo.org)

Most often, this function is performed by Hydrogen Peroxide and Urea Peroxide. Hydrogen peroxide is one of the most typical examples: in dyes and lightening formulations for hair, it helps to reveal the color and at the same time weaken the natural pigment of the hair, which makes the shade lighter. Carbamide peroxide works as a source of hydrogen peroxide and is therefore found, for example, in teeth whitening products and can also be used in hair products. It is important to understand that such ingredients require precise dosage and follow the instructions: in high concentrations they are more irritating, so manufacturers limit the scope and conditions of use. (cosmeticsinfo.org)