The dream that you are wearing mask or you see someone wearing a mask in your dream. the dream about mask represents you are trying to hide your true feelings. also the mask means that you are hiding yourself behind the mask and not allow others people to see you true self.
If you see someone wearing a mask in dream indicates that you will forced to confront temporary trouble, deceit, dishonesty, envy, falsehood, jealousy and treachery. if there removes their mask that means your efforts have failed, you will loss respect and admiration from someone and anyone are misunderstanding in your action and some conduct.