I think you're right Valerie.

It's funny. I have a couple older cels from Miyazaki/
Studio Ghibli works and the lines look great! Very crisp!

My Sailor moon cels from a couple years ago are already
fading. 

I wonder if it is because people treated the Miyazaki cels
better than the others in my collection? Or is it just
the paint?

Anyone up for chemical analysis?

Wendy