Hey Everybody...
I've read so much here, that its not possible to give an original answer. My two cents is, I shave about once every 3-5 days now. I say now, because I used to have to shave once every 1-2 weeks (or until my hair has grown back long enough to use my head clippers).
Since I joined SBGF, I went out and bought a bottle of the HeadSlick cream and am totally sold on its ability. Only one part of my head is sensitive and that's a half-dollar sized patch in the back.. and for that sake, I didn't like dealing with the irritation. When I have some time, I'm gonna post my 'Routine', you'll definitely get a kick out of it.
Peace...
Socrates