White on White Shampoo 64 oz by Chris Christensen A semi permanent color that will not rub off on hands or clothing or for that matter a white towel, and last up to 4 weeks. Color pigment deposit system. Small molecular weight (tiny particles of color) that penetrates the top layer of the hair which is the cuticle or hair lens surface to the cortex without the use of harsh chemicals. Neutralizes unwanted stains that cleansing does not remove, or deposits wanted color tones. Does not stain the outer layer of the hair surface, thus allowing passage of light through the translucent hair surface to amplify gloss and colors.