Sulfur – Not to be confused with irritating sulfates that can be found in some cleansers and treatments, sulfur is an element that can be quite good for your skin. It removes the dead skin cells and excess oils that clog your pores. But just like any chemical ingredient, too much of it can dry your skin out. You’ll likely find it coupled with other ingredients in your cleanser, like benzoyl peroxide, salicylic acid, and resorcinol.
Benzoyl peroxide attacks the P. acnes bacteria. However, one of its main side effects is dryness: If you’re going to use anything with benzoyl peroxide, make sure to moisturize afterwards. Sulfur and azelaic acid are less common and less severe alternatives to benzoyl peroxide. Dr. Peter Lio, assistant professor of clinical dermatology at Northwestern University, says sulfur-based treatments are “a good fit for patients who can’t tolerate the side effects of benzoyl peroxide.”
A review published in the Archives of Dermatological Research found evidence that sleep deprivation, stress and other aspects of “modern life” are linked to adult female acne. The researchers point out that “Modern life presents many stresses including urban noises, socioeconomic pressures and light stimuli. Women are especially affected by stress during daily routine. Women also have a higher risk of developing psychiatric disorders such as depression and anxiety. Sleep restriction is added to these factors, with several negative consequences on health, including on hormonal secretion and the immune system.” (7)
Antibiotics. These work by killing excess skin bacteria and reducing redness. For the first few months of treatment, you may use both a retinoid and an antibiotic, with the antibiotic applied in the morning and the retinoid in the evening. The antibiotics are often combined with benzoyl peroxide to reduce the likelihood of developing antibiotic resistance. Examples include clindamycin with benzoyl peroxide (Benzaclin, Duac, Acanya) and erythromycin with benzoyl peroxide (Benzamycin). Topical antibiotics alone aren't recommended.