More difficult than keeping the makeup from sliding off the actors' faces? Keeping their hair from losing its style, which was quite a feat in the Malaysian heat.
"In Singapore, because of the humidity, we had to use hairspray — a pretty strong one," Merker said. "This was a challenge because if you use too much, you can see it under the light or on camera. I really like the Fudge Skyscraper Medium Hold Hairspray ($46) because it's strong but leaves the hair soft. That's important because you're not just shooting one scene a day, and so if you have to change the hairstyle, this was easy to brush out so you can start again."
Image Source: Warner Bros. Pictures / Courtesy Everett Collection