A New Strength of Retin-A Microgel Approved The FDA has approved a new strength of Retin-A (tretinoin) microsphere 0.08% made by Valeant. Tretinoins are indicated for the treatment of acne vulgaris. It is thought that tretinoins work by modifying abnormal follicular keratinization. By increasing the mitotic activity of follicular epithelia, tretinoin increase the turnover rate of thin, loosely-adherent corneocytes. Through these actions, the comedo contents are extruded and the formation of [...]
