This protein-enriched, color-enhancing purple shampoo is specifically formulated for blonde, gray or silver hair.Tones down brassinessCan be used on natural or color-treated hair . Results after 1 use.Colormate Shampoo Blonde Silver is an award-winning, protein-enriched color enhancing shampoo that tones down brassiness on blonde or gray hair.Protein enriched deep color conditioning, highlights with no dull yellow. No brassiness.