Use Tea Tree Oil
Tea Tree Oil is a natural antibiotic & antiseptic. Dab full strength (sparingly) 3 times a day or add 1 drop to 1/4 cup warm water, pat it with a cotton ball (make sure its 100% cotton) or you can use tea tree soap. Eat fruits mainly Strawberries, grapes & pineapples. They all contain high amounts of AHAs (Alphahydroxy acids). AHAs help exfoliate the skin by removing dead skin cells that can clog the oil glands. Drink at least 8 glasses of water a day.
For "supplements" I advise using Vitamin C (Ester C is a good one) 1000mg 3 times daily, Milk thistle & most importantly Acidophilus (New Flora from New Chapter take as directed)
Stay away from the main enemies (Sugar, alcohol, butter, cheese, caffeine, chocolate, fried foods, hot/spicy foods) & anything else w/ brominated vegetable oils. If you shave use an electronic or a single blade in the direction the hair grows.
If all else fails (severe acne) you can use a treatment called "Blue Light Treatment".