Salicylic acid is an organic acid. It was originally discovered by American Indians in the bark and leaves of certain trees. That particular form of salicylic acid was acetyl salicylic acid. It was known and passed down for generations that when the bark was chewed, headaches or other inflammatory processes actually improved. We know acetyl salicylic acid today as the drug aspirin.
The salicylic acid used for acne treatment is actually a higher concentration than would be found in nature. Its usefulness in acne control is that it promotes exfoliation of the skin surface cells, and in particular the cells lining the sebaceous ducts. Topical application of salicylic acid on a daily basis in low (1-2%) concentration promotes regular, even exfoliation that minimizes the plugging of follicles.
In more concentrated forms (15-20%), salicylic acid acts as a peeling agent. This is normally reserved for application by an aesthetician, nurse or physician in an office setting. This procedure allows a more rapid removal of the foreign material so that scarring does not occur. The Jessner's peel is a solution of three different peeling agents including 14% salicylic acid. |
