Great summer skin can be a balancing act. Glowy? We love glowy. We seek out the glow. But there’s always the danger that you’ll slide (ahem) into slick and sweaty-looking territory, especially if you are prone to having oily skin.

Enter: Stay-Matte Oil-Free Makeup, which was tested and developed in a room designed to mimic the high-temperature, high-moisture climate similar to that of notoriously steamy Mexico City, Mexico. To be specific, that humidity room was set to 88°F with a constant 80% humidity—a major makeup meltdown stress test.

AC: What about foundation? I don’t like to wear a lot of makeup when it’s very hot. It winds up melting!

FW: Same thing—look for a foundation that helps control oil production and is also humidity and sweat proof, without feeling too heavy. Stay-Matte Oil-Free Makeup is a lightweight, gel-cream formula with mattifying and oil-absorbing ingredients and a silky smooth finish. Get the right shade that matches your skin tone perfectly so you can apply it sparingly only where you need it—around your nose, under your eyes, on your chin, and a little bit on your forehead.

AC: Sunscreen is also hard to wear when your skin gets oily and sweaty. Any tips?

FW:A lot of people feel sunscreen makes them oily, but it doesn’t have to. The trick is to apply it right after you get out of the shower or wash your face in the morning, then give it time to sink in along with the rest of your skincare before you head out into the humidity.