When I first started head shaving with HeadBlade Sport, I remember the instructions noted that shave the left side of the head with the razor in the left hand the the right side with the razor in the right hand.
Lately I've been using a DE for the head and (probably out of habit) find that I shave the left side with the DE razor in my left hand then switch it up for the right.
Was just wondering what other DE head shavers do?