Illuminators can be used to highlight areas such as cheekbones, cleavages, and brow-bones as they play off light. When light hits a brighter surface it makes it more pronounced, so stick or pen illuminators are best for this precise placement. An illuminator is not a foundation.

What is the purpose of illuminator?

The Illuminator. There is an illuminator built into the base of most microscopes. The purpose of the illuminator is to provide even, high intensity light at the place of the field aperture, so that light can travel through the condensor to the specimen.

Do you use illuminator before or after foundation?

Apply illuminator after foundation

Ideally, the foundation is to be the first makeup on your face to set the base. Afterward, before you go on to apply your powder or blush, apply the liquid illuminator on your face. This makes the illuminator blend into your makeup properly.