Laura Mercier Foundation Powder Sponge - 2PK. A sponge for powder foundation application. A specially designed sponge for the perfect application of Smooth Finish Foundation Powder. Can be used wet or dry. For a Sheer to Medium coverage Dry: Use the sponge and apply just as you would a pressed powder to the desired areas of the face avoiding the eye area. For a Medium to Full coverage Wet: Dampen the sponge and apply desired amount; smooth onto the face avoiding the eye area.