I’ve had the same hairdresser for 21 years. She recently took a career break of several months. I forgave her, of course, for having a life event, but what about my hair? I had already fallen in with the salon’s new system of interdisciplinary care pathways. On my arrival one staff member would check me in, another would wash my hair and get me seated before my hairdresser was summoned, and a fourth came round and offered me tea. I humoured this …