I sometimes mix baking soda and tea tree oil in the shower and scrub my face with that or at night, use Cetaphil, baking soda and tea tree oil before going to bed.
I second the brown sugar!
I love, love, LOVE brown sugar for scrubbing my face sometimes (I use baking soda more often though) or I mix it with my usual baking soda. I love it even more for my no-poo routine. It gives my hair volume, shine, and true 'anti-frizz smoothing curl' phenomenon that you can only get with using gobs of Garnier Fructis.
Makes sense, Garnier has Fructose (fruit sugar) and Glucose (sugar) in it
I mix Suave Tropical Coconut conditioner, baking soda, and brown sugar together and no-poo my hair with that. I do the scalp scrub, let it sit for a while and then rinse thorougly. I may put some apple cider vinegar on the bottom of my hair, or some more of the conditioner so the ends aren't dry. Very clean, shiny hair!
Love it!