Thanks, ponies  I'll give it a try at some point, don't have peroxide in the house right now..erm..
I found a few interesting videos on YT where collectors had good results with peroxide on Transformers and Masters of the Universe figures and they are basically same as MLP playsets I'd think.

Being a historian, film restorer and archivist I can see how time and the obvious enemies of all things will eventually take away what we adore.
It's been remarkable little focus on preserving and restoring plastic objects and I have been annoyed by the fact that we take action when it is too late rather than when there's still time - that goes for anything really - film, architecture or any design.
Of course historical objects are subject to how important they can actually be ? But as long as we do save certain pieces that are only of design value then all objects should potentially be of historical interest.

I'll do some experiments and post about the results - if anyone else try remove yellowing please let us know how it turns out.
I recall trying nail polish remover on something decades ago and that is a 100% total fail..obviously   
Btw. have any of you seen MLP - or any other 80s toy - in a museum yet ?
We have had 80s interior, and I think it is a permanent display now, at the Norwegian Folk Museum. It would be so darn cool with a 80s toy museum...I die 

My story is long and rather depressing at times, it's been a bumpy ride but my love for things like MLPs have kept me going through it all.

Today I'm a film historian - I restore silent comedies and research the history of a forgotten comedian from the era.
I live in a large old house in the country together with my hubby and my little critters : 4 bunnies and a macaw.
The gloomy side is 15 years of health problems -- chronic migraines and I was diagnosed with hypothyroidism a few years back after being seriously ill for several years. I didn't get treatment in time and still try very hard to repair the damages. It is not easy !

Apart from G1 MLPs I collect, Popples, Rainbow Brite, 80s Barbies of choice, Strawberry Shortcake, She-Ra, Jem..love Punky Brewster and 80s movies. You know -- fun, carefree colorful stuff.
I fill my house with antiques - the place looks like a 1920s jazz age flapper fabulous time capsule, and I wear a lot of vintage - mainly early 30s..love Pre Code 30s movies !!

I'm also vegetarian and quit wheat and it's done wonders - never touching that stuff again. I'm very health conscious - it's important. I want to collect ponies for as long as possible, lol 
What else..I just unboxed part of my MLP collection for cleaning and my bathroom is full of dirty Popples in need of a bath - yup, moving sucks !
Yeah..and I love rainbow hair. First time I dyed my hair pink was in 1986 - I was 9. Not very usual back then. I blame it on ponies 

I'm a tea junkie and I tend to opt for French teas like Mariage Frères or even Ladurée. Celestial Seasonings is very good too, and that's cheap..and in bags. I'm not sure if you can get loose tea from CS.

Strange, it says 57 kb on disc on my Mac and 54, 5 kb in Photoshop. Where do you find the info ?
EDIT  I resized again - it now says 33 kB on disc on the info here -- is it any good ?

Ditto