Ok, well you say a week...is that daily shaving or not...I guess I'm just looking for a number of shaves...mine has had 3 shaves under its belt already. I am definitely turning into a daily shaver. Also, as a red head, I have light skin, so am for sure taking care of it. Although, the last time I shaved my head, I was at a camp for a week and didn't really worry about sunscreen, yet I didn't burn at all.