A primer is a makeup product applied to the face before foundation or other makeup. It creates a smooth, even base for makeup application and can help to control shine and oil production. Primers are especially beneficial for people with greasy skin, as they can help to keep makeup from sliding off or looking cakey.
There are many different types of primers on the market, but not all of them are created equal. Some primers are better suited for oily skin than others. When choosing a primer for greasy skin, it is important to look for products that are oil-free, non-comedogenic, and mattifying. These products will help to control shine and oil production without clogging pores or causing breakouts.