Cowboy Magic® Shine In Yellowout™ Shampoo neutralizes yellow stains and brightens hair of all colors. Takes yellow stains out of hair and gives dull hair of every color a more brilliant sheen. Leaves hair silky, shiny and smelling good. Allergy tested and dermatologist reviewed. 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.