Makeup primer is a product applied to the skin prior to other types of cosmetics to give better and longer-lasting coverage. Various types of primers, such as foundation primers, lip primers, eyelid primers and even mascara primers, target different areas of the face, but all have the same general purpose.
Primers aid in preparing the skin to receive makeup by filling in lines and smoothing uneven areas. These products not only heighten the staying power of foundations and eye shadows, but they can also reduce the appearance of skin oiliness. While most primers are colorless, some are tinted to even out skin color. Use primers in a thin film to desired areas, after applying any sunscreen and moisturizers.