What is the primary function of a cleanser in skincare?

The primary function of a cleanser in skincare is to remove dirt, oil, makeup, and impurities from the skin's surface. Cleansing is a fundamental step in any skincare routine because it prepares the skin for subsequent treatments, such as exfoliation, toning, and moisturizing. A good cleanser helps to clear away debris that can clog pores and cause blemishes, ensuring that the skin remains healthy and radiant.

While moisturizing the skin is important, that role is typically fulfilled by creams or lotions rather than cleansers. Balancing skin's pH is a consideration that may come into play with toners or specific treatments, and protecting the skin barrier is generally the function of moisturizers or serums. Thus, the essential purpose of a cleanser revolves around the removal of impurities to keep the skin clean and ready for further care.