What is the primary function of a moisturizer?

The primary function of a moisturizer is to hydrate and protect the skin barrier. Moisturizers are formulated to increase the water content of the skin, helping to maintain hydration levels. They create a protective layer on the skin’s surface that helps to prevent moisture loss, which is crucial for maintaining healthy, plump skin.

By enhancing the skin's ability to retain moisture, moisturizers support the skin barrier, which is vital for overall skin health. A well-functioning skin barrier also helps protect against environmental irritants, allergens, and pathogens, contributing to a more resilient complexion.

In contrast, cleansing is necessary for removing dirt and impurities, while exfoliation serves to slough away dead skin cells to promote a smoother appearance. Adding color to the skin is more aligned with cosmetic products like bronzers or foundations, which do not inherently provide hydration or barrier protection. Thus, the primary role of a moisturizer distinctly focuses on hydrating and protecting the skin barrier.