When is the best time to use mask?

For most of us, nighttime is the most relaxing time in a day.  Good mood will help our skin absorb more nutrition from the masks.  The time slot from 12 am to 3 am is the best time during which our skin repairs itself, so using mask before bedtime will enhance the process and help send the ingredients of masks further into the skin.

However, masks can also serve as "emergency rescuer" for your skin.  When the skin is in a desperate condition/need, e.g. after staying up all night, before going to a party, before an important meeting, or after going through some extreme weather condition such as windy weather, dry weather, or prolong sun exposure, masks can be used to relieve the symptoms anytime and help skin recover in a short time.