See Benedict Cumberbatch’s slick, combed-back hair in The Abominable Bride?
That’s his real hair. But this? This is a wig.
How do we know? Well, in this post-mortem of the Victorian-set Sherlock special, Amanda Abbington, Mark Gatiss, Steven Moffat and Sue Vertue discuss behind-the-scenes details like this, revealing that Cumberbatch’s first and only response to the idea of a wig was, “can I have my hair cut?”
So he didn’t like having all that tousled Sherlock hair quite as much as his fans like seeing it, then…