hair

brush/comb your hair do your hair = arrange it in a style  

have/get your hair cut/done =by a hairdresser  

short/long hair  

shoulder-length  hair

 fair/blonde hair =hair that is yellowish-white in colour

dark hair 

 red/auburn hair also ginger hair British English =hair that is orangey-brown in colour  

straight/curly hair  

frizzy hair =hair that is tightly curled 

 wavy hair =hair with loose curls 

 fine/thick hair  

lank hair =hair that is thin, straight, and unattractive 

dark-haired/fair-haired/long-haired etc  

strand of hair =a thin piece of hair 

lock of hair =a fairly thick piece of hair  

mop of hair =a large amount of thick untidy hair  

be losing your hair =be going bald 

run your fingers through your/somebody's hair  

ruffle/tousle somebody's hair =make it untidy by rubbing your hand through it