i don't know of any really except for the tale of Samson. it's a bible story about a man who was granted strength through his hair, his wife Delilah cut it off one night which resulted in his death [after being beaten and blinded of course.] i do know many cultures see hair and certain styles to represent different things, such as class, occupation and age. in Egypt when a cat dies, they would shave all the hair off their bodies in mourning. [including eyebrows]
depending on what pagan path there might be some significances, but all i can think of is using it in spells, like making poppets.