if me, i will wash first then put masks..
so far i have no prob of over producing too much oil due to
useage of masks..
washing face cleans off the dirt on the surface, so that the
mask can work better into the skin
i have qn too!! If lets say u guys use the sheet masks, wld u
put it until its really dry dry then take off? or really go
according to the timing?
some pple say if put too long the moisture will be absorbed back
to the sheet mask instead of leaving on the skin