(E3) E3 Brightening Shampoo for Brighter Manes, Tails, and Coats. Palmino, Paints, Grays and other Fancy colors will look better than ever. E3 Brightening Shampoo is loaded with optical brighteners that give your horse brighter whites, shiny highlights and silvery, sparkling grays. E3's unique formula works to neturalize yellowing and enhance highlights. Fortified with Nano Multi-Vitamins A,C,E & F for superior absorption and penetration to the mane, tail and coat.