What is the primary purpose of a moisturizer in skincare?

The primary purpose of a moisturizer in skincare is to attract and retain moisture. Moisturizers are formulated to hydrate the skin by creating a barrier that prevents moisture loss. Ingredients commonly found in moisturizers, such as humectants (e.g., glycerin, hyaluronic acid), help draw water into the skin, while emollients and occlusives help seal in that moisture, keeping the skin supple and preventing dryness.

This hydrating function is crucial for maintaining the skin's elasticity, softness, and overall health. Well-hydrated skin also appears more youthful and can better defend against environmental stressors. Understanding this purpose allows estheticians and clients alike to make informed choices about their skincare routines, particularly when selecting products suited to individual skin types and concerns.