I just randomly thought about how fascinated the aliens might be by human hair.
Like... just imagine.
We are the only ones (as I'm not counting quarians now because well... suits) with this... fluffy thing in our heads, that comes in so many shapes, colours and textures, without having basicaly no function at all. Besides maybe looking aestheticaly pleasing.
Imagine a human child going to a mostly alien kindergarden/elemetary school for the first time and most of the other kids are super curious about it and are asking to pet them.
Or a teenage girl with an asari friend group, where the others absolutely obsessed with not taking her out shoping for clothes but also with trying out different hair styling techniques on her they saw on the extranet.
If there are books for alien parents adopting human kids there is surely whole chapters about hair and what to do and not to do with it.
If a human is they type to dye their hair and it begans to grow out/fade and change colour, it might cause a minor confusion in alien collegues in their workplace because they don't know that it's not natural.
And don't even get me started on the concept of wigs an hair extentions...












