Innovative hair color shampoo that gradually reduces grey with every washCGX reduces grey gradually, for subtle, natural-looking results, unlike other dyesIt makes reducing grey radically easy: All you have to do is shampoo your hairTriple patented formula with hemp oil and arginine. This product is best for light brown to black hair.Just use it instead of your regular shampoo until you like what you see. Then alternate with your regular shampoo to maintain the look you like.