When applying the Shade color inside the Contour Pro Palette, use the flat side of the sponge to contour and blend color naturally in to the skin. When applying the Highlight color inside the Contour Pro Palette, use the rounded side of the sponge. The smaller applicator at the tip of the brush can be used to help draw more defined and narrow lines on the face. If the seams are not disappearing, slightly dampen the sponge to expedite blending. This brush can be washed with luke-warm water using soap or shampoo, rinse thoroughly until you see clean water when you squeeze the sponge.