This Okara Silver Antiyellowing Shampoo by Rene Furterer is specifically formulated for gray, white, or very light blonde hair that tends to develop unwanted yellow tones. It gently cleanses while neutralizing brassiness, restoring luminosity, and maintaining the natural vibrancy of cool-toned hair. The formula leverages Okara extract, known for its repairing properties, to help restructure the hair fiber damaged by oxidation.