Not a lot of people know that Joel McHale actually had a hair transplant. This is the only known plastic surgery he's had -- other than some Botox rumors, but it's not confirmed. In fact, if you look at Joel McHale in Superman - the one with Toby Maguire - then you'll see him with the receding hairline you see in the before picture. He took a very conservative approach to his hair transplant, which fortunately gave him a natural looking result. It still looks like Joel McHale has a balding hairline, but you won't see that thing ever go back any further.
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