Which substances are known to cause a chemical reaction to remove dead skin cells?

Chemical exfoliants are specifically designed to facilitate the removal of dead skin cells through a chemical reaction. These substances typically contain active ingredients such as alpha hydroxy acids (AHAs), beta hydroxy acids (BHAs), or enzymes that work by dissolving the bonds between dead skin cells or promoting their sloughing off. This process is more efficient and often leaves the skin smoother and more radiant compared to physical methods.

In contrast, mechanical exfoliants and soft scrubs rely on physical action, such as scrubbing or rubbing the skin, to slough away dead skin cells. While they can also be effective, they do not involve a chemical reaction and may not penetrate the skin as deeply as chemical exfoliants.

Moisturizers are formulated to hydrate and protect the skin, but they do not have any properties that actively exfoliate or remove dead skin cells. Their primary role is to maintain skin's moisture balance rather than exfoliate. Thus, chemical exfoliants are the only category that specifically utilizes a chemical process for the purpose of removing dead skin cells.