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.
Chemical Peel Differences. A chemical peel, or derma peeling, is considered by the American Society of Plastic Surgeons to be one of the least invasive ways to improve the appearance of skin. Typically applied to the face, a chemical peel enhances and smoothes the texture of the skin to remove the damaged outer layers.