Clinical studies have NOT demonstrated any causal relationship between certain foods and acne. There is no cure for acne. Modern acne therapy, however, involves the use of several medication that can keep the acne under good control until it disappears. Benzoyl peroxide is the most commonly used acne medication available without a prescription. It is a potent anti-bacterial that can decrase the number of bacteria and also help unplug obstructed follicles.
All concentrations seem to be therapeutically equivalent.
Benzoyl peroxide should be applied once or twice daily. You should expect mild redness and scaling of the skin during the first week of use. If excessive redness or dryness develops, discontinue use of the preparation for several days and then use it half as often as you did before. A six to eight week trial is needed to see improvement. Antibiotics may be prescribed for certain types of acne.