How Stopping Oxidative Stress Can Prevent Grey Hair Arey Reverse Gray Hair: 20 Nutrients, Vitamins, Supplements, Herbs, More Cause of grey hair may be 'stuck' cells, say scientists How Does Stress Cause Gray Hair? The Scientist 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