Arkansas Esthetician Practice Exam

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Which acid is known as a beta hydroxy acid?

Glycolic acid
Salicylic acid
Hydrochloric acid
Sulfuric acid

The correct answer is: Salicylic acid

Beta hydroxy acid (BHA) refers to a type of chemical compound that is able to exfoliate the skin. Out of the given options, glycolic acid, hydrochloric acid, and sulfuric acid are all alpha hydroxy acids (AHA) and do not have the same exfoliating properties as BHA. Salicylic acid, on the other hand, is a beta hydroxy acid and is commonly used in skincare products for its exfoliating and anti-inflammatory properties. While salicylic acid is sometimes referred to as a beta hydroxy acid, it is important to note that not all beta hydroxy acids are salicylic acid. Other examples of BHA include tropic acid and beta hydroxybutanoic acid.