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The two are often believed to be interchangeable, but the main difference is that retinol is eventually converted into retinoic acid. Retinol is a natural form of vitamin A, while Retin-A is derived from retinoic acid, a synthetic derivative of vitamin A, and considered pharmaceutical.
Retinol is a form of Vitamin A â it's the kind people get when they consume animal products like eggs or milk. In the body, it is necessary for good vision, as well as for healthy soft and skeletal tissues. It can penetrate the skin, repairing cells and restoring elasticity. In the fight against aging, retinol is a major player. Manufacturers include it as an active ingredient in acne products, pore minimizers and wrinkle creams. Some companies also use it to treat sun damage or as a lip plumping agent.