What function does a humectant serve in skincare products?

A humectant plays a crucial role in skincare products by attracting water. This ability to draw moisture from the environment or deeper layers of the skin helps to keep the skin hydrated and plump. When applied, humectants form a protective layer that not only helps retain moisture but also enhances the overall texture of the skin, making it look more supple and healthy.

In skincare formulations, humectants are commonly used for their hydrating properties, which can be particularly beneficial in products aimed at dry or dehydrated skin. Examples of widely used humectants include glycerin, hyaluronic acid, and aloe vera. These ingredients actively bind water, making them essential in maintaining skin hydration over time.

Although the other options may relate to different aspects of skincare, they do not pertain to the primary function of a humectant. Preventing UV damage is the role of sunblock or UV filters. Thickening liquids is associated with thickeners or emulsifiers in formulations. Lastly, exfoliants work by promoting the shedding of dead skin cells, rather than focusing on hydration. Thus, the primary role of a humectant distinctly aligns with its ability to attract and retain water for optimal skin hydration.