Learn more about lipids with Professor Thomas M. Terry. Fats or triglycerides are formed by three fatty acids each bonded by an ester linkage to glycerol. 1  Twist and turn the lipid below to see how kinky fatty acids are.
Superficial peels are the mildest type of chemical peel. They can be used on all skin types. In most cases, they use liquid containing a mild (dilute) acid, most often glycolic acid. Dry ice (solid carbon dioxide) is sometimes used. Medium peels soak deeper into the skin than superficial peels do.
What is a chemical peel? Chemical peeling uses a chemical solution to improve the skin's appearance. It can reduce or eliminate fine lines under the eyes and around the mouth. It can correct uneven skin pigmentation, remove precancerous skin growths, and soften acne or treat scars caused by acne.