The typical Vulcan is depicted as short-haired guy with long robe. I can't recall seeing a male Vulcan with long hair.
Sure, Spock once did in Star Trek: The Motion Picture, but I recall that he's been in a kind of exile (please correct me if wrong). And after they returned him to the Enterprise, he got a fresh and clean short hair cut.
I also Googled a bit, but the only thing I've found has been 50 Shades of Long and Prosper.
Spoiler alert: Not safe for people who can't look at a naked male torso.
After that I went a bit thinking. Sure we only see short-haired male Vulcans, but we mostly also see military or persons of publicity. And even on our world "The Businessman" wears a suit and short hair. So maybe these occurances are just situational. Military haircut? Business and ambassador haircut?
It's like Klingons: Sure they're all with blood and honour, but we also know that there are normal folks on Qo'noS like smiths, engineers or vendors.
So are there long-haired male Vulcans in canon? By that I don't mean Vulcans in exile or not in favor of a barber. Just normal citizens having long hair.
Because what can be more metal than being born on a vulcan?