How to clean: Wet the bristles and the brush cleaner egg. Place a drop of brush cleanser or soap into the brush cleaner egg. (Or the palm of your hand) Gently massage the bristles in the cleaning egg or your palm. Keep rinse the bristles thoroughly until no stains. The Multipurpose Makeup Sponge: MAKEUP BLENDER. Dual-use, wet or dry, commonly used for various kinds of cosmetics, such as powder, BB cream and liquid foundation, etc. Reusable & washable beauty sponge. Edge-less design for maximum and seamless coverage.