Retinaldehyde vs Retinol: What the Enzymatic Conversion Difference Actually Means for Your Skin

The Conversion Pathway Is What Separates Retinoids The terms retinol and retinaldehyde appear frequently in professional skincare discussions, often treated as interchangeable or as variants on a spectrum of strength. They are not interchangeable, and understanding what separates them requires looking at the enzymatic pathway through which each becomes active in skin tissue. Vitamin A in all its topical forms […]