1. The water replenishing facial mask can be applied for 15-20 minutes generally, but the specific application time should be determined according to the instructions of the facial mask.
2. If the facial mask indicates that the recommended application time is not more than 30 minutes, and there is no skin discomfort, then 30 minutes of application is OK.
3. However, it is not recommended to use the facial mask for more than the maximum time recommended in the instructions, so as not to burden the skin or lead to excess nutrition.