Water based FD & C color additive for natural soaps, lotions and creams. This is a gorgeous color of blue in soaps. Various shades of color can be achieved by the amount of color you add from a soft, pale shade to a deep, rich deep ocean blue color. 30 ml bottle. Ships in powder form in a bottle. Simply add water when ready to use. Hydrates to a 2 oz. bottle of color. We recommend 1/4 teaspoon per 3 pounds of soap.