What is the main function of a humectant in skin care?

The main function of a humectant in skin care is to attract moisture to the skin. Humectants are substances that have the ability to bind water molecules from the environment or deeper layers of the skin, ensuring hydration and maintaining moisture levels. This is particularly important in skin care, as adequate hydration is crucial for skin elasticity, suppleness, and overall appearance.

Components commonly classified as humectants include glycerin, hyaluronic acid, and urea, all of which work by drawing moisture into the skin. This helps to prevent dryness and improve the skin's barrier function over time. With properly hydrated skin, other processes such as healing and regeneration can be enhanced, making humectants a vital ingredient in many moisturizers and serums aimed at maintaining skin health.