This is a tricky one and wondered what others do. I sporadically tip my hairdresser throughout the year as it's flipping expensive as it is and I work freelance so often don't have much money to spare. Last Christmas I gave her £20 as a Christmas tip and she didn't thank me! (it was in a card which she opened after I'd left.)
Did I not tip her enough and how much should I tip when I get my hair done tomorrow? I don't want to be insulting but I'm not particularly flush at the moment.