I shaved my head for the first time nearly nine years ago. I kept it three or four days and let it grow back. Several months later, I did it again and kept it over 30 days, but eventually let it grow out again. I went back and forth for a couple of years, shaving my head mainly for a summer haircut. Finally, about four and a half years ago, I shaved and never looked back. It took me a couple of years to get into a good routine, including choosing a razor and shaving cream that works well for me. I plan on staying a bald guy for life!