...was in two different styles in this episode, I'm sure of it.
Now I never usually notice things like this and it's probably just bad editing, but maybe it's a similar scenario to Smith's jacket on/off thing from the Time of Angels and we're getting two versions of Capaldi's incarnation? The tough, gritty, harsh version and a slightly softer, more 'Doctorish' version?

Or it's just bad editing. :-P

The hair stylist got it wrong when Capaldi came on location, back from shooting Mummy. That's the "Cardiff" reason. I'm sure we can speculate on the "in-universe" reason, no end

I thought the two styles were intentional. The flatter style was there when the TARDIS was in trouble and the life support was failing.

I noticed that his hair was more bushy when he left the tardis. I assumed it was a continuity error

I noticed this! Very very doubtful that it's a deliberate hair flattening mind. Though you be never know, maybe he did it to appeal to his flat enemy!

Genius. I'll go with that.

I thought the same thing - he had his backcombed perm thing for most of the first half but seemed to have a flatter style with a bit of a parting and hair flicked forward later on.

I put it down to his having been shaken around in the Tardisette - but I never write off anything curious.

If you want to - add it to the "throwaways" thread at http://forums.digitalspy.co.uk/showt...002895&page=16 - trying to keep a list of anything that just might have the potential to be "something"

It was quite a poor continuity error, tbh.

I'm wondering whether his scenes in the TARDIS and the location scenes were filmed at different times during the 8 month shoot? And his hair had grown.

Agreed. It wasn't just a styling error. I think the scenes at the end were filmed at a totally different time to the others. Capaldi looked more like he did in 'Into the Dalek'. I think his characterisation was different as well.

Or his head has shrunk.

Well he did have to keep sticking his head up against a door and path what was getting smaller and smaller that may have fattened his hair a bit

Maybe they cut a line

"Life support failing. Reactor core going critical. Hair gel supplies dangerously low!"

That'll be in the deleted scenes on the DVD!

While Capaldi was trapped in the TARDIS, he was also off filming Mummy - just as Jenna was trapped in the train compartment while she was filming Flatline

When Capaldi came to film his bits in the tunnel, there was a mix-up.

[ Source: Part of Clan Mackinnon ]

Thanks for that.
A simple continuity error - so no need to invent complex plot reasons for it.

I think we can forgive the BBC the odd mistake eh, here or there When Clara and Riggsy meet the policewoman and Clara claims to be from MI5, Clara and Riggsy swap position (left & right) with each other. Didn't spoil the show, it just happens ...

I know there's no need. It's fun though.

Don't get me wrong I'm not nitpicking and didn't detract from my enjoyment of the story, just something that stood out to me that's all.

Yup, I spotted the smilie in your OP, all good

If that's the case, it was less noticeable than previous years!

His hair was flat when he left the Tardis and banished the Boneless (with the others present ofc) as well as his solo scenes, then was much longer, wavy and pushed back again as he dropped them off in the final scene.

If it's a continuity error it's a pretty big slip to have a noticeable haircut - not just a slight trim - in the middle of filming an episode!

Ah.

So when the life support fails

Capaldi's hair fails too!

Exactly what I thought.

I started watching my season 8 set today and can't help but noticing how normal capaldis hair is in deep breath compared to last christmas where it is bouffant. He reminds me of jon pertwee in that respect as his hair started reasonably normal on spearhead from space and progressively got more and more bouffant as the series went on.