is for gray, white, highlighted and light blonde tinted hair and is a protein-enriched color enhancing shampoo. It brightens, shampoos away yellow, refreshes highlighted hair and maintains ash tone color. Shimmer Lights Shampoo is a protein-enriched conditioning formula. Tones down brassiness on blonde and gray hair. Renews and refreshes faded highlights and ash-toned hair. Removes dull yellow in gray/white hair. Leaves hair shiny without residue.