◇If the sponge gets dirty, it will be difficult to apply foundation, so please keep it clean at all times. If the feel or finish of the sponge becomes poor, please purchase a new sponge. When replacing the sponge, please use the separately sold "Shiseido Sponge Puff (Square, Soft Touch)" 100. ◇If the sponge gets dirty, please use the separately sold "Shiseido Sponge Cleaner N" or dilute a mild detergent in lukewarm water and gently press and wash it. After rinsing thoroughly to remove all detergent, drain the water and dry well in the shade before using. ◇If it becomes difficult to open and close smoothly, please purchase a new compact case.