The only thing I can think of, for hairstyles is a Korean website (so while it covers the middle ages, it certainly isn't European). It starts off with the artwork, and then goes through computer-generated reconstructions through to a video where they try to recreate the hairstyle.
http://hair.culturecontent.com/
An example of the videos. This one is trying to copy a hairstyle from Anak Tomb No.3, 4th century CE:
http://hair.culturecontent.com/mall/pop_movie.asp?c_id=cp0413400008&c_name=%C8%AF%B0%E8%BD%C4%B8%D3%B8%AE
Thanks pearl and paantha!
I have done some more looking at literature in the meantime, and it really looks as if there's between not much and nothing. Well. That makes me a little more relaxed that it's not a case of "researcher being too stupid to find things" but a case of "not much done on that topic, really".
And admittedly - there is that slight problem of hairstyles not keeping well over a few hundred years...
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