MD10 White Texture Volume has been used for Black and White Texture / Volume Coat So far. Black Newfoundland, Black German Spitz, Black Curly Coated Retriever, Black Spanish Water Dog.
However, if you have SOLID BLACK dog and if you would like to improve the black color, you can try this MD10 Black Texture Volume. It does not alter the other color, how ever if your dog has more white than black, please choose MD10 White Texture Volume Shampoo.