Retinoids Explained: Retinol, Retin-A, Tretinoin, Purging & Skin Barrier Care
Retinol and prescription tretinoin can help improve acne, fine lines, uneven texture and visible sun damage—but they can also cause purging, peeling, redness and burning. Learn how retinoids work, what to avoid, when irritation has gone too far and how to care for your skin barrier while it adjusts.