What is a main benefit of using a clay mask in skincare?

Using a clay mask primarily benefits the skin by absorbing impurities. Clay masks are formulated with natural clays, such as bentonite or kaolin, which have excellent oil-absorbing properties. These clays help draw out excess oil, dirt, and other impurities from the skin, making them particularly beneficial for individuals with oily or acne-prone skin. When applied, the mask adheres to the impurities in the pores, effectively cleansing them and leaving the skin feeling refreshed and purified.

The other options highlight beneficial aspects of skincare, but they do not capture the primary function of clay masks. While some clay masks may offer hydration or promote a brighter appearance due to other added ingredients, the key attribute of clay is its ability to absorb oils and impurities, making option B the most relevant choice regarding the main benefit of clay masks in skincare.