Revolution Gray recommends Nexxus Simply Silver Colour Toning Shampoo and American Crew Classic Gray Shampoo for gray hair. Vogue adds Klorane Shampoo with Centaury and Sachajuan Silver Shampoo to the list of recommendations.
Gray hair requires different shampoo from other hair colors because gray hair tends to be more dry and coarse. Shampoos designed for gray hair provide extra hydration and have a smoothing quality that helps make it softer and more manageable. Many of the best shampoos for gray hair also have a violet shade to them to help neutralize some of the brassy yellow tones that occur with gray hair.