Unbelievably wonderful product, others make my hair like a cotton ball. less time without the damage and better coverage, no smelly odor or stingy burn like peroxide.! There must be a real political blockage for this product to have not replaced the primitive peroxide. I am not a hair dresser but if you are please try and it is safer for you and yours. Also avoid colors with derivatives of cyanide, most do except Aveda and some European brands, it goes directly to your blood stream and is carcinogenic, bring ingredients to a pharmacist and he will wrinkle .