Baking soda makes a fantastic facial scrub! Just mix around a teaspoon of baking soda with a little dab of mild liquid soap, and a drop or two of water. Be sure to rinse thoroughly with warm water. Your face will be soft and glowing. I used to spend around $25 on micro-dermabrasion scrubs for generally the same result.
Baking soda is also an excellent natural way to remove blackheads.
I do this but instead of soap I use olive oil. Mix enough baking soda and olive oil together to make a thin paste. If you find it is too abrasive just add more oil. I usually do this in the shower before I get my face wet. Just rub on the paste, rinse off the baking soda and then I go about the rest of my shower routine, washing my face with gentle soap at the end to get rid of the oil. Voila! Smooth exfoliated moisturized skin.