Here’s another given: the older you get, the more lines and wrinkles you start seeing. Yikes. But aging gracefully comes with using the right products, and primer is one of them. It gives you a smooth canvas to apply your makeup, and some formulas even shrink the appearance of pores. Here are two of our readers’ favorites: Tarte Clean Slate Primer, $30 and Laura Mercier Foundation Primer, $30.