"How hot is too hot?" This is a real query I typed into my Google search bar one humid morning while vacationing in Tulum, Mexico. In actuality, it was a mild day by Tulum standards — a mere 84 degrees at 9 a.m. that grew to a sweltering 95 degrees by mid-day. It was the kind of weather I'd typically use as an excuse to sit around watching reruns of Law & Order: SVU with a fan pointed directly at me. But since we were on vacation, I thought I'd use the opportunity to test some of my long-wear makeup favorites.