A breakdown of some deaging vfx we did this last year. We developed a new way to deage people using ai machine learning and composting. This saved us hundreds of hours of work and made the workflow much simpler than traditional methods.
I still want to use deepfakes for one of my fan projects, but your method might be useful for the primary one. I'm sure Fringe did something similar with John Noble in 2009, and it was hell to do then.