Wow Stain Remover and Whitener turns yellowed manes, tails, and feathers back to their natural color, and removes protein-based stains by breaking the bond between dirt, feces, urine, etc. attached to the hair and skin of horses. It is a naturally brightening, bio-degradable, enzyme-activated color restorer. Mane, tail and feathers: Spray liberally, brush in, and if necessary, wrap tail overnight. Do not rinse. Body: Brush off lose dirt and spray green spots with WOW! Rub in with a towel and leave in.