Makeup sponge, also known as a beauty blender, is a soft and porous cosmetic tool used for applying and blending makeup products, such as foundation, concealer, and powder. It is typically made from a latex-free foam material, such as polyurethane, that is gentle on the skin and does not absorb too much product.Makeup sponges come in a variety of shapes and sizes, including teardrop, egg-shaped, and wedge-shaped, to accommodate different areas of the face and different makeup application techniques. They can be used wet or dry, depending on the desired effect and the type of product being applied.