Washing hair on Earth takes long enough as it is, but NASA astronaut Karen Nyberg shows in a new how-to video that it's even more difficult to shampoo in zero gravity -- check it out above.
In the video, which posted on YouTube this week, Nyberg demonstrates how to wash long hair in space. She uses some warm water, no-rinse shampoo, a comb, a mirror and a towel to accomplish the feat.
The Expedition 36 crew member -- and the only woman currently aboard the ISS -- decided to share her hair-washing routine after she received a lot of questions via social media about how she's able to maintain her long locks.
Astronauts have become increasingly vocal on social media during space missions in recent years. Canadian astronaut Chris Hadfield, who returned from the ISS in May, gained widespread attention after he filmed a series of similar how-to videos in space.