To exfoliate means to wash with a granular substance in order to remove dead cells from the skin's surface. The best way to do this is with an exfoliating glove and body scrub. Be careful of sugar and salt scrubs that contain oil which may hinder the tan from developing.
GLO on the GO's Scrubtious- Body Polish and Bro GLO- Scrub
have been specifically formulated to allow the skin to be properly prepared without leaving an oily residue.