Being an astronaut is a tough job, defying gravity, orbiting earth and all. But whenever we see a shuttle launch, we can't help but ponder those nagging little questions, like, 'How do they pee in those suits?' or "Do women need to wear bras in space? (The answer is, apparently, yes.) So of course we were fascinated watching astronaut Karen Nyberg demonstrate part of her beauty routine onboard the International Space Station.

She's surprisingly cheery for someone who has to use "no-rinse shampoo" and bagged water on her long hair. We love her cool-as-an-astronaut demeanor when with those less-than-ideal shampooing conditions. And we've never seen a more badass troll doll hairstyle.