Glutathione Peroxidase 2 an overview ScienceDirect Topics According to research, an excessive buildup of hydrogen peroxide is a primary cause of grey hair. This buildup bleaches the hair from the inside out and damages the melanocyte melanin producing cells Measurement of superoxide dismutase, catalase and glutathione peroxidase in cultured cells and tissue Nature Protocols Several lines of antioxidant defense against oxidative stress: antioxidant enzymes, nanomaterials with multiple enzyme mimicking activities, and low molecular weight antioxidants Archives of Toxicology Springer Nature Link