I started keeping my head buzzed to a number 2 or 3 years ago. I can still grow a full head of hair, but I had wanted to shave my head for years. I shaved it bald for the first time about four years ago, and immediately grew it back. Since then, I’ve shaved several times, keeping it for a month or two. Four months ago, I shaved again, and have kept myself bald ever since. It takes a while to establish a good routine. My scalp irritation always went away after a couple of weeks. I started shaving in the shower about three months ago, and that has worked out well for me. The hot water prepares my stubble for shaving and it’s easy to go back and get any spots I may have missed the first time. Good luck to you.