According to a source, Cooper "is so anxious about his receding hairline that he's turned to balding remedy Propecia."
Cooper, 39, "has a lot of bald guys in his family, so he's been on Propecia for a couple of years," the source claims. "And to his delight, it seems to be working."
In fact, Cooper's curly Hustle do was entirely extension-free! But it was still a three-hour ordeal.
"We curled the hair one day with curlers," Cooper told The Los Angeles Times about his time on set. "We put 110 curlers in and then I sat underneath a heat lamp for 45 minutes on each side."
But the source claims that when he made The Hangover 3 he and the other two male leads, Zack Galifianakis and Ed Helms "had their own dedicated hairstylists, a first for the franchise and something that was demanded by Bradley" because of his sensitivity regarding his hairline.
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And though he's looking good for now, the source says, "Bradley is determined not to go bald and lose his leading man looks."