Let's learn the proper time to apply a face mask.

It is best to remove a face mask after leaving it on for only 10 to 20 minutes if possible. Leaving a mask on for longer than the recommended time disrupts the skin's oil-moisture balance. As time passes, the ingredients in the mask dry out and evaporate, drawing moisture from the skin's surface along with them. Furthermore, while the sheet remains in close contact with the skin, it hinders the elimination of impurities, which can lead to skin problems.