Which treatment involves applying a warm, moist towel to the face for hydration?

The treatment that involves applying a warm, moist towel to the face for hydration is steaming. Steaming helps to open up the pores, allowing for better absorption of products and increased blood circulation to the skin. During a steaming treatment, the heat and moisture from the towel create a soothing effect, which can enhance the skin's hydration levels and improve its overall appearance. This method is particularly beneficial before applying other treatments, as it prepares the skin, making it easier for subsequent products to penetrate more effectively.

In contrast, exfoliation refers to the process of removing dead skin cells from the surface of the skin, which does not involve warmth or moisture applied through a towel. Masking typically includes applying a specific type of product, like clay or gel masks, for a certain duration to address particular skin concerns, but it does not usually involve the direct application of a warm towel. Misting, while it does provide hydration, typically refers to the use of a fine spray rather than a warm towel application, making steaming the appropriate answer for this specific question.