Oils produced by the body help keep skin healthy, but there can be too much of a good thing. Excess oil can lead to blemishes and acne flare-ups. "Fortunately, there are plenty of ways to cut down on oiliness," Andrea Cambio, MD, medical director of Cambio Dermatology in Cape Coral, Florida, says. Clear complexion strategies range from over-the-counter cleansers to prescription lotions and cosmetic treatments.