A black eyeshadow base can make your eyeshadow colors more intense and vibrant. It can also help to create a smoky eye effect. When applying a black base, be sure to use a light hand so that you don’t end up with raccoon eyes. To apply, start by using an eyeshadow primer on your entire lid. Then, using a small brush, apply the black base to the outer corner of your lid and blend inward. You can also use a cotton swab to help blend the color if needed. Finish by applying your desired eyeshadow shade over top of the base.