You, know that's actually a good idea. I never though about using plastic wrap to keep the gel from drying out. I never tried it but I don't see why it wouldn't work. The gel won't melt the plastic wrap so you should be good to go with it. And since plastic wrap is transparent, and since I highly doubt it has any UV blocking ability, plastic wrap should not hinder the deyellowing process at all. It's worth a try!