After you've washed your face, place 2 tbsp. baking soda in the palm of your hand and add just enough water to form a thick paste. Massage the paste into your face, resisting the urge to scrub, for about 30 seconds. Rinse the paste away with cool water. You should notice that your pores are smaller almost immediately. After a week of this regime you'll see visible results as your skin becomes clearer and less prone to breakouts.