Many people think that there are a lot of essences in the facial mask. Every time after applying the mask, it feels sticky. In fact, it is just the thickener of the mask and will not be absorbed by the skin. If the mask is not cleaned after the mask is applied, it may cause bacterial infection of the pores,blockage and acne. So it will be better to clean the face after we applied the mask before we go to next step of our skin care routine.Unless it is a sleeping mask or a leave-in mask.