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Finally, a how-to for washing your space

Astronaut Karen Nyberg demonstrates her techniques for personal hygiene from the neck up aboard the International Space Station.

In space, a shower can be cause for spending the night in. Screenshot by Eric Mack/CNET

There's nothing more awkward than when a bit-too-friendly cosmonaut serving with you on the International Space Station finally asks you out.

Caught off guard by his forward request to join him for yet another viewing of "Contact" followed by a romantic spacewalk, you mumble an excuse about having to wash your hair and try to quickly float past him to the nearest hatch.

The showering cop-out isn't just weak sauce because it's an old sitcom trope, but it's gotta sting all the more with the knowledge of the fact that there is no traditional showering on the ISS.

Fortunately, U.S. astronaut Karen Nyberg is relaying her best tips to help navigate such orbital faux pas.

In the YouTube clip below recorded on board the ISS and posted Tuesday, she demonstrates her process for washing her hair in zero gravity.

Turns out, it probably makes for a much better excuse for dodging a social engagement in space than it does here on Earth. That's because a thorough shower in space can easily take the better part of an evening when you must continually grab at water droplets that are floating away and chuck them back in your direction.

Watch the full tutorial below, and don't forget to check out other space hygiene classics like former Commander Chris Hadfield's toothbrushing demo.