How to remove yellow staining from Jakks Classic Superstars?

[saintegenevieve]

I'll be more than glad to post pictures.

I purchased a lot of CS last year since I stopped buying some maybe 18 years ago.  Even when I bought a Mr. Fuji MOC (then took it out of the package), there are these really strong yellow stains on the white coloring of their clothes.  I wanted to get a Brother Love, which had a similar issue.  It seems to skew towards supporting cast toys.  The Fuji in particular also had a weird slime residue on the black part of his jacket.

Does anyone have any suggestions on how to remove those?  There's this solution, but some have said that the solutions aren't permanent.  I don't think his video either addresses the slime residue.




It would be a travesty if the CS ones were to go bad because I enjoyed the diverse lineup of the supporting cast of characters like Brother Love and Mr. Fuji. I probably wouldn't collect without the managers and commentators. 

Thanks

[LA Times]

You are going to need a bottle of hydrogen peroxide, transparent cups and some really hot summer days. This was how I cleaned out the yellow off a couple of RA John Cenas I had kept in front of a window for years. The staining did come back months later even though I kept them away from a window but not as much as before.

http://instagr.am/p/Cm17Jd0p0U7