Makeup Handbook: Primer Prepping

What is a primer?
A primer simply means a specific kind of cream or lotion that is applied on the face before another cosmetic is used. The purpose of a primer is to ensure that the amount of time for which the other cosmetic lasts on the face remains long enough. There are specific kinds of primers for different kinds of cosmetics: foundation primers, eyelid primers, lip primers, and mascara primers.