This is a sulfate-free-formula shampoo for color-treated hair, built around pearl powder and designed specifically to slow fading in vivid and fashion-tone colour (reds, pastels, and other high-maintenance shades) rather than color-treated hair in general.
In place of the sodium lauryl/laureth sulfates found in many everyday shampoos, it cleanses with sodium C14-16 olefin sulfonate and sodium lauroyl sarcosinate — gentler surfactants that Matrix markets under its sulfate-free line — paired with cocamidopropyl betaine and coco-betaine as secondary cleansers. Pearl powder is included for shine.
It produces a milky, high-foam lather and is gentle enough for daily use. It's one part of Matrix's broader Keep Me Vivid color-care system (shampoo, conditioner, leave-in, and color-lamination spray); color-fade protection is strongest when the full system is used together rather than the shampoo alone.