so when you are building long handlebars, do you grow all your mustache out to that length? or just grow out the ends and trim the upper lip to a reasonable level?
The whole thing. Mine has only been growing around 6-8 months so the stuff closest to the center isn't part of the handlebar curl much yet. Eventually, though, the center will add thickness to the curl. It's only a dozen hairs or so out there at the tip, lol. Poor guys have the most difficult job too.
Sorry for a disproportionately large reply to your simple question.