Maine Cosmetologist Practice Exam

The primary function of moisturizer in skincare is to provide hydration. Moisturizers are formulated to add moisture to the skin, which is essential for maintaining a healthy skin barrier and preventing dryness. When the skin is well-hydrated, it appears more plump, radiant, and youthful. Hydration helps improve the skin's elasticity, making it less prone to fine lines and wrinkles.

Moisturizers typically contain ingredients like humectants, which attract water to the skin, and occlusives, which help seal in moisture. This dual action is crucial for rehydrating the skin and maintaining its moisture levels over time. In various climates, especially dry ones, the use of a good moisturizer can drastically improve the skin's texture and overall health.

Other functions of skincare products mentioned in the options, such as cleansing, exfoliating, and UV protection, involve different types of products or specific ingredients designed for those purposes. While these are all important aspects of a complete skincare routine, the defining and primary role of a moisturizer is distinctly aimed at providing hydration.