Simply Color from Schwarzkopf allows you to color without compromise! Enjoy The simple way to cover your grays without ammonia, silicone, and alcohol. Simply Color nourishing formula with botanical oat milk, soy protein, and argan oil provides up to 100% gray coverage with vibrant, even color from root to tip. It is dermatologist tested, gentle on scalp and gives you visibly healthy-looking hair. If your hair is longer than shoulder length, we recommend using 2 boxes of Simply Color hair dye for the application.