What it does The foundation wedges ensure perfect application of liquid, cream, powder & stick foundations - both oil & water based. Use the feathered edge for blending & contouring. What else you need to know The foundation wedge is perfect for applying and contouring your foundation Instructions - How to use Dot a small amount of foundation onto chin, cheeks, nose & forehead. For powder, lightly dust sponge with powder. Using sponge, blend foundation outwards towards the hairline & below the jaw line.