Frankly I was just scared to shave my head, and thought it would turn the recovery period from a 1-2 week thing, into a 4-5 month thing because all of a sudden I have a shaved head and have to explain why to everyone around me during that time. My dad had an FUE and didn't shave his head - he looked weird for the first few weeks cause of the scabbing, but after that I couldn't really tell. If my hair looks really odd in a couple months perhaps I'll buzz it anyway, so I'd kind of rather wait and assess the situation then rather than shave it pre-emptively. The nurses that did my transplant said the non-shave wouldn't really affect the quality of the procedure much, but will take a little longer as you mentioned.