Never heard of 2 and 3 pass shaves until I joined this forum. Started shaving with a DE Razor in the Mid 60s. Everybody that I knew only used one pass when they shaved. Once and done and it was good to go. Tried the 2 and 3 pass shave routine and really saw very little if any benefit to it. I'm a once and done guy and get a very close shave. Never any need for a do over.