Jojoba oil mimicks sebum, the oil the can clog pores. Therefore by using it you will see a decrease in oiliness. Also, since the molecules are small enough to get deep into the pore, it will bring out any dirt or other material in the pore, leaving only clear skin. This is a slow process happening over about a month so you won't have a huge breakout right at the beginning. It is fantastic. I would recommend it to anyone, with or without acne. Read some of Marti's posts on the Skin board, she is truly an expert and can answer all of your questions. Hope this helps.