Sadly not everything translate well into English, but I'll love such snippets, and I'd like to share:
That reads 27 December 1803, as usual courtesy of the BNF
An elegant fop's hair is blockingly cut at the front, and rather short/shaved on the sides: on top of the head the hair is cut high and teased into the shape of fishbones; on the sides there is some sort of empty bit named Luck's Way, at the forehead a bushel of hair falls down to the eyes, another bunch falls in curls like a tail.
That is the description of current styles given by Mr Crépon (creper = teasing hair, Crepon = hair rat), the wig maker. This analysis leads to the conclusion that there is much to say about the outside of a fop's head: there would be much less to analyse on the inside.
O cerebrum caput etc....
P.S.: I'm by no means well equipped using use hair dressers terms, but to me it reads as some sort of 1980ies mullet hairdo ;-)