Following the internet meme
only registered users can see external links I dug up an old photo of decade ago, and combined it with a recent pic.
There clearly is considerable continuity, but age has definitely taken its toll: lots of gray hair and wrinkles. Be that as it may, from an intellectual point of view I would never want to go back to that past self, undoing the growth of the past decade.
It has been said that the #10yearchallenge is being misused by large social networks to extend their facial recognition database. That is a little worrisome as a general concern, but personally I have no problem being recognized as the aging guy I am.