This multi-functional blending sponge expertly fits all angles of the face to help blend your makeup. Using the concave edge, blend hard to reach areas with concealers, like under the eyes and around the nose. Precisely apply makeup onto the smallest parts of the face. Using the wider edges, blend large areas of the face with foundation & contour/highlight products. When the sponge is wet, it expands to about twice its size and becomes super soft to create an even, smooth blend and bounce, returning to its original size when it air dries. We recommend replacing your makeup sponge every 3 months. Korlin Multi-functional Makeup Blender Sponge Set: Soft, comfortable Easy to use, blend Well Ideal for liquid foundation Assortment of colors optimizes your organizing Can be used to apply a wide range of beauty products