Are you also such a fan of sheet masks? No mess and after 20-40 minutes you just throw away the mask and lubricate the remaining serum in your skin. Dr. Jart has gone a step further with rubber masks, which prevent evaporation of all the good ingredients. In total there are 5 different masks, the packages each contain a separate ampoule containing the serum and a two-piece rubber mask. This works differently from the use of sheet masks or bio cellulose masks, as they are already soaked with the serum and work in one step. These Rubber Masks work in 2 ...