What is the primary function of humectants in skincare products?

Humectants play a crucial role in skincare by effectively drawing moisture from the environment into the skin. This hydrating ability helps to maintain skin moisture levels, resulting in a plumper, more elastic appearance. Humectants, such as glycerin, hyaluronic acid, and aloe vera, are commonly found in moisturizers due to their effectiveness in attracting and binding water to the skin's outer layer, which can enhance the overall hydration and appearance of the skin.

When compared to other functions, the thickening of texture, stabilization of emulsions, and preservation of the product are not the primary roles of humectants. While these functions are important in formulating effective skincare products, they are served by different types of ingredients, such as thickeners, emulsifiers, and preservatives, respectively. Thus, the primary function of humectants is indeed to draw moisture from the air into the skin, making it an essential component in hydrating formulations.