Just wondered what everybody else thinks about this - as I always go to the hairdresser on my own, I've no idea what anybody else does! I occasionally tip my hairdresser (eg if it's £37 I'll round it up to £40) but not always - came to £75 last time as I had highlights too and I didn't know what to do so just left it.
I don't want to tip and risk offence, if it's against convention, but I don't want them to think I'm mean. On the other hand it's pretty expensive! As far as I know people don't tip for other luxuries, like massages or manicures (do they?) so I assumed hairdressing was no different. I don't tip taxi drivers as a taxi ride usually cleans me out anyway! and I do usually tip in restaurants provided I've had good service.
Would love to know what others do!