Shimmer Lights Conditioning Shampoo is protein-enriched color-enhancing shampoo which tones down brassiness on blonde or gray hair. Shimmer Lights Conitioner is a rich blend of emollients, moisturizers and color refreshers that renews faded highlights and brightens gray hair. Shimmer Lights Conditioning Shampoo and Shimmer Lights Conditioner refresh faded highlights, remove the dull yellow in gray hair and elave hair shiny without residue - and they can be used on natural or color-treated hair.