The best way to fix them: This is where the classic zit treatments come into play. "Topical medications are the best way to treat a lesion like this," says Jennifer Chwalek, M.D., a dermatologist at Union Square Laser Dermatology in NYC. "Benzoyl peroxide-, salicylic acid-, or sulfur-based products can help to dry it up." She prefers salicylic acid over benzoyl peroxide for these, since the latter can cause irritation, dryness, and even post-inflammatory hyperpigmentation (a.k.a. dark spots) in those with darker skin tones. Retinol works well for these, too.
No one factor causes acne. Acne happens when oil (sebaceous) glands are activated at puberty, stimulated by male hormones from the adrenal glands in both boys and girls. Oil is a natural substance which lubricates and protects the skin. Under certain circumstances, cells that are close to the surface block the openings of sebaceous glands and cause a buildup of oil underneath. This oil stimulates bacteria, which live in everyone's skin and generally cause no problems, to multiply and cause surrounding tissues to become inflamed.
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