Chemical peels are categorized by how deeply they penetrate the skin: superficial, medium, or deep. Superficial peels penetrate only the uppermost layer of the epidermis. They are often performed in a series to treat fine lines and wrinkles around the eyes and mouth. A medium-depth peel is more effective for patients with moderate skin damage, including age spots, freckles, and actinic keratoses. It is often coupled with laser treatments to maximize effectiveness. Deep chemical peels are quite aggressive and affect the skin down to the reticular layer of the dermis. Traditionally performed with phenol, deep chemical peels are not very common today, as newer laser technology can deliver greater results with more control and less post-procedure discomfort.
The physical solutions used in these chemical peel treatments fall into two general categories: water-soluble acids including alpha-hydroxy acids (AHAs) and trichloroacetic acid (TCAs), and oil-soluble acids such as beta-hydroxy acids (BHAs). Some acids are both water and oil-soluble, such as mandelic acid and resorcinol. In general, AHAs have a less drying effect than BHAs on the skin. Resorcinol, first popularized in the Jessner peel (a blend of salicylic, lactic, and resorcinol) can break down rough, scaly, and hardened skin, making it a popular addition to medium and deep peels.
The type and depth of chemical peel administered will depend on your skin type, concern, Fitzpatrick type, and skincare habits. Consult with your skincare professional to create a customized treatment plan for your specific skin needs and to understand how to maintain results with advanced homecare.