Are Retinoids Exfoliants?Vitamin A can be broken down or converted into many forms; the general term for these derivatives is retinoids. Of the many retinoids available tretinoin or adapalene are prescription-only topical ingredients. Prescription-only, topically applied retinoids are significant for skin because they can positively affect the way cells are formed deep in the dermis.If you have sun-damaged, dry, wrinkled, or acne-prone skin, you should become familiar with the names Retin-A, Renova, Differin, Avita, and Tazorac, which all contain different forms of retinoids. The active ingredient in Retin-A, Avita, and Renova is tretinoin, Differin uses adapalene, and Tazorac uses tazorotene. In fact, both Renova and Tazorac have been approved by the FDA for the treatment of wrinkles (Sources: Dermatologic Surgery, June 2004, pages 864-866; Archives of Dermatology, November 2002, pages 1486-1493; Clinical and Experimental Dermatology, October 2001, pages 613-618; and www.fda.gov ).Exfoliants such as AHAs and BHA primarily affect the top layers of skin improving its appearance, integrity, and protection potential. They also help improve the function of the pore. In contrast, retinoids affect the lower layers of skin (dermis), where new skin cells are produced. Retinoids actually communicate with a skin cell as it is being formed, telling it to develop normally instead of developing as a sun-damaged or genetically malformed skin cell.Why the confusion about the effect retinoids can have on the skin? Primarily it's due to the fact that products containing retinoids can cause irritation and inflammation, resulting in the skin becoming flaky and dry. This flaking and dryness is not exfoliation, nor is it a desirable or advantageous result. If retinoids cause your skin to be consistently dry and flaky, it is a problem and you should probably avoid products that contain it or reduce how often you use them.Despite the valuable effect tretinoin or adapalene can have for skin, don't expect them to "erase" wrinkles because while the improvement is impressive it is not dramatic. However, if skin cells can be produced with a healthier form and shape, the skin's surface will have a smoother appearance, skin cells will do their job of turning over in a more normal fashion, the protective outer layer of skin will remain intact, enhancing the skin's healing response, and on and on. In essence, the skin will behave and look the way it did (to some extent) before it was damaged by the sun.Regardless of these positive effects, retinoids will be useless, and the skin will be prone to more damage, if you do not wear a sunscreen as well. Not a wrinkle cream in the world, even one approved by the FDA, can have positive results if you don't use an effective sunscreen; without that, you are just adding to damage you already have accumulated.What retinoids, AHA, and BHA products have in common is that once you stop using them, your skin will revert to the way it was before. These products will not produce permanent change. The smooth exterior lasts only as long as you use them. But used together long-term, they are a formidable weapon in the battle against wrinkles and blemishes.I hope that answered your question.