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Retinoic acid

Retinoic acid (RA) improves acne scars and postinflammatory hyperpigmentation (PIH),
Retinol is a natural vitamin A derivative commonly found in anti-aging creams. But it may also be an effective ingredient for treating acne and reducing the appearance of acne scars.

So, how does it work, are there side effects, and how often should you use it for clearer, smoother skin?

In this article, we’ll help answer those questions and also provide suggestions on retinol products that may be good choices for acne-prone skin.