All you need are two ingredients. Baking Soda (NOT baking powder) and water.
Those who want to know how to treat acne with baking soda should begin by mixing the baking soda with water to make a paste. This paste should be very similar in consistency to toothpaste, as it should be soft enough that it can easily be rubbed over the skin. You should also make sure that your face is wet before applying this baking soda acne, as this will ensure that the paste is able to be spread easily
Mix a little together in your hands after washing your face with a mild cleanser and apply gently to your skin. Once you've coated your face with the baking soda and water mix, let it sit while you do other things around the house, or relax and read a book.
Rinse the baking soda film off your face and feel how soft and clear it feels. If your skin enjoys this recipe, and your acne improves, then you may try it several times a week to help clear your acne.