Various companies have perfected shading or contouring powders. These brush on easily with a blush brush and are almost fool-proof. If the shading is applied too heavy, you can minimize it with a little translucent powder.

I always hear about “shading” and “contouring” but what exactly are they used for?

Most make-up artists use shading or contouring to minimize fullness under the jaw area, emphasize the cheek bones, or give the appearance of narrowing the width of the nose.