Tip - Types of Retin-A | eHow

Retin-A is a brand name for tretinoin, a retinoic acid used to treat acne. Retin-A markets a variety of products and some are used to stimulate skin to reduce wrinkles and aging. There are other products that use treinoin, but Retin-A uses the original acne fighting formula and is available in creams, gels and more enhanced formulas.