"Every woman should use this marvelous bleaching cream" - Blanche Calloway, bandleader and sister of Cab Calloway, for Genuine Black and White Bleaching Cream (which is still sold today). The ad boasts a skin lightener so powerful that it sinks all the way "down beneath the four layers" of the skin where the "coloring" takes place, providing a "way to lighten and whiten your skin."