Which of the following is a common benefit of using thermal masks on dry or mature skin?

The common benefit of using thermal masks on dry or mature skin primarily relates to hydration. These masks generate warmth through a chemical reaction or physical properties, which enhances blood circulation and helps in the absorption of hydration and nutrients into the skin. The increased warmth can facilitate the delivery of hydrating ingredients deeper into the skin layers, resulting in improved moisture retention and a more plump appearance.

While tightening and toning might be a perceived effect, it is not the primary function of thermal masks for dry or mature skin. Instead, the focus should be on how these masks provide hydration, which is crucial for maintaining skin elasticity and reducing the appearance of fine lines and wrinkles. Other benefits, such as detoxification and exfoliation, can occur through different mechanisms or products and are not specific to thermal masks designed for dryness or mature skin types.