Zinc Oxide is useful for whitening soaps
The rate of usage is between 1 teaspoon and 1 tablespoon per pound of oils, variable based on the whiteness you desire.
The higher usage may result in a chalky soap, and it is recommended to use at a lower rate and increase as needed.
This disperses easily in water to give a smooth opaque colour. Recommended to stick blend the colour into the soap batter for even colouring.
This is a lipsafe colorant and can be used to add opacity and to lighten lipstick shades or to create nude shades mixed with other pigments.