Just came across this wonderful tutorial on vectorizing hair . I have been doing Vector portraits for my friends and they loved it but after this tutorial i am sure they are going to adore them. Just follow the tutorial the level is expert so you might want to go back to illustrator help to get understanding of a few options .
 But believe me it will be worth the time . A Must follow for all vector fans out there go and check it out! you can also download the related hair brushes set which will help you follow along step by step![/private]