◇If the sponge gets dirty, it will be difficult to apply foundation, so please keep it clean at all times. ◇If the sponge gets dirty, use the separately sold "Shiseido Sponge Cleaner N" or gently press and wash it with lukewarm water and a diluted neutral detergent. After rinsing thoroughly so that no detergent remains, drain the water and dry well in the shade before using.