Say hello if you want to photograph a person, then do it.
I walked into Tom's place purely on impulse (Claremont’s Old Theatre Lane). He has 2 motorbikes in there, clubs on the walls, lots of old magazines and you can see all of that from the street. It felt like a place every man should go to ones a week for a proper shave.
The gentleman sitting in a chair used to serve in the Army in intelligence. He had to shave every day. When he retired he promised himself to never shave again in his life and he didn't. Now he just trims.