Restoring white lego bricks by using Hydrogen Peroxide

[jaesroe]

Hi Lego fans,

I have a question regarding whitening the discoloured lego bricks by using Hydrogen Peroxide. I saw some youtube videos, showing that how to restore the discoloured lego bricks via this solution.

However, some people say that those treated white pieces by hydrogen peroxide, returns back to previous yellowed colours after few months. How abiut you guys cases? all those white bricks are still in good white status after few months?

Any comments regarding this issue would be appreciated.

[legoguy1984]

Hi, there is already a thread devoted to this. I don't know how to link it here. I have done it and so far so good. I think someone mentioned on the thread that their parts were still white long afterwards. I think a piece will, over time, return to a yellowed state.

[antp]

http://www.eurobricks.com/forum/index.php?showtopic=7167

[john cleese]

are there any colors for which the method does not work or worse yet, exacerbates the discoloration?