Oxidizing agents are usually hydrogen peroxide, and the alkaline environment is usually provided by ammonia. The combination of hydrogen peroxide and the primary intermediate causes the natural hair to be lightened, providing a “blank canvas” for the dye. Ammonia opens the hair shaft pores so that the dye can actually bond with the hair and speeds up the reaction of the dye with the hair.”..
Oxidizing agents are usually hydrogen peroxide, and the alkaline environment is usually provided by ammonia. The combination of hydrogen peroxide and the primary intermediate causes the natural hair to be lightened, providing a “blank canvas” for the dye. Ammonia opens the hair shaft pores so that the dye can actually bond with the hair and speeds up the reaction of the dye with the hair.”..
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