Look for booths it's pure and natural and inexpensive I use it with my "best" products as it works really well. It's abrasive enough to get off the tan and good enough to help your skin.
BUT be warned any exfoliant will make your cells rumble and you could break out -

For your body just get a fresh lufa and make a scrub with kosher salt and olive oil -

i have extrememly pale, extremely sensitive, acne-prone skin. I used L'Oreal Sublime Glow sunless tanner, and now after a week or so its a little patchy with white spots, and simply stated, I just look dirty. Any recommendations on a good exfoliator? It must be gentle enough to use on my face, won't break me out or clog my pores, but tough enough to make my skin look "clean". Something fairly cheap that I can buy at my local drugstore!

Clean and Clear Daily Pore Clenser. I am exacly like you an it is the only thing that worked for me. In 2-3 Days I looked a whole lot better.