What is the primary purpose of a moisturizer?

The primary purpose of a moisturizer is to hydrate the skin. Moisturizers are formulated to add moisture to the skin and help to prevent water loss, which is essential for maintaining a healthy skin barrier. Proper hydration supports skin elasticity, suppleness, and overall appearance, making the skin look more vibrant and youthful. Moisturizers work by sealing in moisture from the environment and assisting the skin in retaining its natural moisture levels, thereby combating dryness and maintaining skin health.

While options such as exfoliation, priming for makeup, and UV protection play important roles in a skincare routine, they do not represent the main function of a moisturizer. Exfoliation involves removing dead skin cells, which is a different mechanism entirely. Primers enhance makeup application but are separate products from moisturizers. Likewise, blocking UV rays is typically the role of sunscreens. Each of these elements contributes to a comprehensive skincare routine, yet the fundamental action of a moisturizer is centered around hydration.