Final answer:
Salon alpha hydroxy acid exfoliants are commonly called peels because they cause the outermost layers of the skin to peel away, revealing smoother skin. The, correct answer is D.
Step-by-step explanation:
Salon alpha hydroxy acid (AHA) exfoliants are often referred to as peels. AHAs are chemical compounds that help to exfoliate the skin by loosening the bonds between dead skin cells on the surface layer, making it easier to remove them and reveal fresher, smoother skin underneath. These salon treatments are called peels because they involve the application of a solution to the skin that causes the outermost layers to peel away over a period of days post-treatment.