looks very young for his age..

He was about 27 when ASM2 was filmed.

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Long ago men competed on a show to date a woman who competed on a show to date Flava Flav.

He does look early 20s

Me too! The secret to be young is avoid yo-yo dieting, alcohol, smoking and drugs and eating too much.
The more you do fasting, the younger you would look. Don't know if Dehaan did it.
He has facial expressions of a teenager.
BTW, to him!

I love Place Beyond the Pines. Dane was just on Fallon and he's going to be a dad! He looks 22-23. And I can't see his new movie, Cure For Wellness, looks like a nightmare! Bet he does a great job though

He looks so bizzare wearing a business suit in A Cure For Wellness, like a kid found his dad’s $6000 suit in the closet and put it on as a surprise. He indeed looks very, very young for his age.