Five seasons on and – like Jon Snow's parentage – it is time to give the issue the attention is deserves.
Because in the midst of the gigantic battles and shocking plot twists, several of the key men of Seven Kingdoms have undergone subtle transformations from walking bad hair days to proponents of some of the most stylish cuts of the moment.
Don't believe us? Then trust the experts, as we consult the team at award-winning barbers – and fellow Westerosi geeks – Ruffians to cast an eye over some fan favourites.
1 | Tyrion Lannister
Peter Dinklage has long been acknowledged as the best actor on Game of Thrones, but does he also now have the best hair? Possibly, but it hasn't always been that way.
"Though naturally textured, Tyrion's Lego Man bowl cut (season one, left) may well have been the reason Daddy didn't love him," theorises Ruffian's Adam Brady.
"Season 5 Tyrion, however, has certainly been looking at some men's hair journals. The voluminous and shaggy locks have been highlighted at the tips, something we'll be seeing plenty of this summer.
"And, not to miss out on a trend, Tryion's grown a beard. Of course. Tywin would have been proud."
2 | Jamie Lannister
Last seen failing spectacularly on a rescue mission to Dorne, the King Slayer has diminished in significance in the show over the past couple of seasons, while his grooming game has gone from strength to strength.
"Those Prince Charming curtains in Season 1 weren't fooling anyone, were they?" says Brady.
"But getting the chop (his hair, as well as his hand) has done him some favours, and he looks pretty swish now with his textured crop and designer stubble."
3 | Cousin Lancel
Lancel Lannister's transformation from silly rich boy to dangerous zealot has been underscored by a radical overhaul of his hairstyle.
"Lancel's season 1 do must have proved too high maintenance," says Brady. "It's probably hard to come by a good mousse and set of straighteners in King's Landing.
"He's made the right decision now and opted for a clean buzzcut."
4 | Stannis
Stannis has gone from a dour bore to all-smirking conqueror in the course of five seasons, a welcome change aided by a much-improved appearence.
"Stannis probably didn't care much for his hairline back in season 1," Brady points out, "which bodes well, seeing as he did absolutely nothing to conceal it.
"However, season 5 sees him divert attention from his widow's peak by growing a white tipped beard and embracing his greys. Good work."
5 | Jon Snow
Actually, no real change there when we look at it.
"Jon's look has developed throughout the show about as much as his character," says Brady. Quite.