Regenerate just like a Time Lord with this Doctor Who Facebook lens

It's the end ... but the moment has been prepared for.
Peter Capaldi's run as the Doctor will finish after this year's Christmas episode of Doctor Who. Capaldi passes the reins to Jodie Whittaker, the first woman cast in the role. Now, just days before the special airs, the folks at the BBC are helping fans get ready for the transition with a Facebook lens that gives a taste of what it's like for the titular Time Lord to regenerate.
SEE ALSO: The 13 best Doctor Who holiday gifts in the universe