Which of the following describes the function of a cleanser?

A cleanser is primarily designed to remove dirt, oil, makeup, and impurities from the skin's surface. The skin is exposed to various environmental factors throughout the day, which can lead to a buildup of residues that may clog pores and cause issues like acne or other skin conditions. The core function of a cleanser is to ensure that the skin remains clean and free from these impurities, thereby maintaining overall skin health and preparing it for subsequent skincare treatments or products.

While exfoliation, hydration, and sun protection are essential aspects of a complete skincare routine, they are functions performed by other types of products. Exfoliants are used to slough off dead skin cells, moisturizers and serums provide hydration, and sunscreens offer protection against UV rays. Each of these has a specific role that complements the cleansing process, but the primary and distinguishing feature of a cleanser is its ability to effectively remove unwanted substances from the skin. This foundational step is crucial for any effective skincare regimen.