A about a year ago I found a dragonball dream 
cel that I was in search of.  It is an A cel, of 
SSJ4 Goku, anyways recently I was reading that 
light from light bulbs can cause line fading, 
now luckally the room that I keep my cels in, 
has no windows and is kept at a good 
temperature, unfortuately my cel was framed and 
up on the wall in light.

so my question is, does this light really cause 
line fading?

I read that toei animation cels are made with 
material that fades no matter what, is this true?

If you go here 
http://www.solointer.com/mangaya/cel/dball/dball1
.html

and look at the first cel of Krillin and ChiCh, 
my cel has some lines similar to the brownish 
lines that krillin has. (like his fist)

Thanks for the advice,

Sarah