Makeup primer is a lightweight formula, typically in a lotion or serum format, that is meant to be applied as the first step of your makeup routine, prepping the skin, enhancing makeup longevity, smoothing texture, minimizing pores, and creating an overall perfect canvas for the makeup that follows. Depending on your skin type, there are primers that solve different concerns, including mattifying and blurring formulas for oil-prone skin with enlarged pores, as well as hydrating primers that quench thirsty skin, preventing makeup from settling into fine lines or exacerbating areas of dryness. If you’re dealing with uneven skin tone or discoloration, look for a primer that will even out your base before even going in with a base product. Certain primer formulas come in color-correcting shades, such as green to counteract redness.