MEN FOR SANDOG SHAMPOO black hair. Maximum quality shampoo for dogs with black, gray and dark coats (Labrador Retriever, Boston Terrier, Belgian Shepherd, Schnauzer, Spincher). Gives a spectacular shine to blue, charcoal, black and all dark colors. This shampoo prevents the black color from turning red due to oxidation. The collagen in its formula revitalizes, hydrates and restores the healthy and natural appearance of the coat. Suitable for frequent use. Fruity smell.