Supreme Products Stain Remover Shampoo. The Supreme Products Stain Remover Shampoo is the perfect product for removing those old stubborn stains to make your horse gleam once more! The Stain Remover Shampoo will work straight away on affected areas and works in breaking down effected stains to improve brightness and shine. With repeated use, this product will help in removal of yellow stains from white tails. Stain Remover Shampoo does not contain dyes or any form of bleach making it user friendly and safe for your horse.