under his armpits

https://www.buzzfeed.com/natashajokic1/rutherford-falls-dustin-milligan-schitts-creek-interview

"Here's something fun and completely embarrassing that happened in the first seasons, then, for some reason, it went away," the Rutherford Falls star tells Buzzfeed. "I'm a human being and that means that I sweat sometimes. There's a lot of scenes in Schitt’s Creek where you may not notice this, but I've got paper towels crammed into my armpits. Our lovely costumer on the show would have a hairdryer ready to go, so in-between takes, I'd be standing there getting my armpits blown. I think a lot of people wouldn't have been able to spot any sort of TV movie magic going on there. Definitely desperately avoiding any indication that I'm human and that I perspire. There was actually a moment on a very hot day outside the motel, Annie (Murphy) turned around and was like, 'I'm so proud of you!' And I was just like, 'What?' Then she pointed to my armpits and said, 'Look at that, they're dry!' She was very supportive."

Buzzfeed must not have anything better to report about.