Retinol vs Retinal vs Tretinoin

Introduction Among all vitamin A derivatives used in dermatology, retinol, retinaldehyde (retinal), and tretinoin represent the most important members of the retinoid family. These compounds occupy different positions within the vitamin A metabolic pathway and exhibit distinct levels of potency, receptor activation, clinical efficacy, and tolerability. The increasing popularity of anti-aging skincare, acne management, and…