Which of the following is a common chemical exfoliant?

Salicylic acid is a well-known chemical exfoliant, widely utilized in skincare for its ability to penetrate pores and dissolve the bonds that hold dead skin cells together. This action facilitates the shedding of the outer layer of skin, helping to improve texture and reduce acne. Chemical exfoliants like salicylic acid are especially effective for oily and acne-prone skin, as they not only help in exfoliation but also have anti-inflammatory properties that can reduce redness and swelling associated with breakouts.

The other options listed—cetyl alcohol, squalane, and jojoba oil—serve different purposes in skincare formulations. Cetyl alcohol is primarily used as an emollient and emulsifier, providing moisture and stability to products. Squalane, a moisturizer that mimics the skin’s natural oils, is designed to hydrate and protect the skin without causing breakouts. Jojoba oil, similar to squalane, provides moisturization and nourishment but does not have exfoliating properties. Thus, among the choices given, salicylic acid is distinctly recognized for its role in chemical exfoliation.