What should be applied to the skin and remain there for 5-10 minutes?

The application of a mask to the skin for a duration of 5-10 minutes is a common practice in skincare routines. Masks are specifically formulated to address various skin concerns, such as hydration, cleansing, or revitalization. They work by creating a barrier on the skin that allows active ingredients to penetrate and exert their effects more effectively over a set period.

During the 5-10 minutes of application, the mask draws out impurities or infuses beneficial ingredients, delivering intensive treatment. This time frame is crucial because it allows the mask's formula to work effectively without overstimulating or irritating the skin.

In contrast, moisturizers are intended for continuous hydration and are usually not designed to sit on the skin for such a short specific period before being absorbed. Exfoliants, while beneficial for removing dead skin cells, generally require different application methods, often involving more immediate removal rather than a prolonged setting time. Serums, while potent and beneficial, are typically used in smaller amounts and are not intended to remain on the skin for a set timeframe like a mask. Thus, a mask stands out as the correct choice for this particular question.