What it is: an edgeless, non-disposable, high-definition cosmetic sponge applicator. What it does: the unique shape and exclusive material available ensures impeccable, streak free application with minimum product waste. Use it with primers, foundations, powders, cream blushes, and any other complexion product. What else you need to know: Beauty Blender features an open cell structure that fills with small amounts of water when wet. This allows the sponge to be "full" so that the makeup product sits on top of the sponge rather than being absorbed, allowing you to use less product every time. When wet, Beauty Blender doubles in size and becomes even softer, returning to its actual size when it air dries.