Exfoliation must be a part of regular skin care. Exfoliation treats the blemished skin, dark marks, clogged pores, hyper pigmentation and dry skin. One of the best home made exfoliators for oily skin is the mask that contains oatmeal and milk. Grind the oatmeal to a fine dust, mix it with milk and rub it gently on the skin and wash after a few minutes.