Shine in yellow out neutralizes yellow stains and brightens hair of all colors: black, grey, Chestnut, bay, brown, roan, skewbald, piebald, and palomino to name but a few. Benefits there are benefits for both horse and human. Shine in yellow out takes yellow stains out of hair and gives dull hair of every color a more brilliant sheen. It leaves hair silky, shiny and smelling good. Directions apply to wet hair, massage in until blue suds turn White. Soak for two to five minutes, then rinse well before repeating, if necessary. Permanent stains try Cowboy Magic green spot remover, then continue to reapply Cowboy Magic yellow out per directions. If stain persists, it may be permanent. Continue to follow directions to minimizes permanent yellow stain until stained area can grow out.