Acne Ingredients: What the Evidence Says

Match the ingredient to the problem

Blackheads and whiteheads involve clogged pores, so salicylic acid may be useful. Inflamed pimples can respond to benzoyl peroxide, while azelaic acid is an option when inflammation and post-acne marks coexist. Topical retinoids also have strong guideline support, but can irritate and may need a clinician's advice.

The AAD recommends choosing one acne treatment and following its directions for six to eight weeks before judging the result. Constantly switching or stacking strong products makes it harder to tell what helps and can damage tolerance.

Dose and tolerance matter

Higher strength is not automatically better. The AAD suggests starting benzoyl peroxide at 2.5% to reduce dryness and irritation. Use a gentle cleanser, a suitable moisturiser and sunscreen alongside treatment. Follow the label for where and how often to apply; avoid treating broken skin without advice.

When to ask for help

Deep painful lesions, scarring, persistent acne or a sudden change warrant a dermatologist's assessment. Pregnancy and medication use can also change which options are appropriate. A label scan helps identify candidates, but cannot decide the right prescription or confirm a diagnosis.