The 1 Thing You Never Noticed About the Hair in Every Broadway Show

"There is a product we used a lot on Cats, and it's a makeup setting spray called Green Marble ($28) by the company PPI," Tinsman said. "It's actually used for underwater shows like Cirque du Soleil. So if you know [the character] is really going to be sweating a lot or are getting wet and you want to keep their makeup on, this is the spray you go for."