De-Aging and the Technology of Turning Back a Clock
Launch library · evergreen read

Digital tools now allow filmmakers to visually de-age a performer for scenes set earlier in a character's life, smoothing features and adjusting proportions on screen without requiring an entirely different, younger actor to be cast in the same role at all for those particular scenes.
The technique demands close collaboration between the performer and a visual effects team, since the actor must still deliver a physically younger performance through posture and movement even as software handles the surface appearance of the face itself frame by frame throughout a long and careful post production process.
Audience reception of this approach has been mixed, since even careful, well funded work can produce a subtle uncanny quality that viewers register without always being able to explain precisely why something feels slightly off. The technology continues to improve steadily, but it remains, for now, a tool used carefully rather than casually across a production budget.