Why Palpatine looked older in Attack of the Clones than in Revenge of the Sith?

Lucas decided to have Palps scarred in Ep3 rather than age him normally. However, why does Palps look younger in Ep3 than in Ep2? And this isn’t just a few more hairs or less liverspots. Literally the guy has fuller hair, less wrinkles, no liverspots, and actually seems stronger? You’d think people would be like, «hey for leader of a galaxy thrown into it’s first war since it’s formation, you look even better than you did a few years ago before the conflict.» Anyways just curious.