Might as well make a thread for it I guess.
Post questions and/or results and anything else about Retr0bright!
What is Retr0bright?
Retr0bright is a Hydrogen Peroxide solution that reverses the yellowing effect UV has on ABS, the twist is it also requires UV light.
How do I make Retr0bright?
You can do it yourself with information here http://www.retr0bright.com/ or (if you're lazy like me) you can buy 40 volume creme at your local beauty supply store since all the key ingredients are present in it.
Correctly applying Retr0bright
Once you're done mixing up the Retr0bright you can apply it to the yellowed item (whether or not you're using the 40 volume creme I recommend taking safety precautions and putting on some latex gloves and wearing eye protection), seal the item by either using a ziplock bag or cling wrap to prevent the solution from drying out and put it under UV light (use the sun or a UV lamp if you happen to own one). I recommend checking on it every few hours and rubbing the solution a little through the cling wrap to prevent possible stains and remove airbubbles.
After anywhere between 6-32 hours the bleached item should have returned back to its original state.
A small example with an AEK II, the spacebar used to have the same color as the case, it was under UV light for roughly 8 hours