I was a skeptic when I purchased this product but after getting used to it I found it is an excellent alternative for those of us who are on blood thinner medications. I have a beard and mustache but shave my head and would use the Gillette Fusion razor to shave it every other day. As careful as one can be, there were times I nicked or cut my head and it bled sometimes for over 30 minutes.
When I got used to the Sonic Groom for Men I was surprised how well it shaved my head. The downside is I need to shave daily. But NO nicks or cuts. My companion expressed how smooth my head was using the Sonic Groom.
So based on my experience the initial recommendation would be to have the company design a blade for shaving the head to make the process go more quickly.
Bottom Line: Yes, I would recommend this to a friend