Hair oxidizer, also known as a hair developer or activator, is a crucial component in the process of hair coloring. It works by increasing oxygen permeability within the cortex (the innermost layer of our strands), allowing pigments from the dye to penetrate more effectively and bond with natural melanin. Yogi Care hair developer cream can achieve long-lasting color results, excellent gray coverage, great conditioning. As a leading hair oxidizer supplier with 17 years experience, we won't let you down, contact!