Friday, October 3, 2014

How to Restore Discolored LEGO Parts!

Here's just my second general how-to video for LEGO maintenance.  I use hydrogen peroxide (H2O2) solution to safely & almost completely reverse yellowing of old parts. White & gray parts show their age in the most obvious way, but this technique works on all colors, and I'm especially happy with past results with blue pieces and transparent windows & windscreens.

Your mileage may vary!  In this video I show exactly what I, personally, do, and I also show the very real results.  It's important to be attentive during the process, as there are a number of easy mistakes that can negatively affect the outcome.  I hope this is helpful!


  1. Hello, I have a lot of bricks that could use a restoration. If I put a pile of several inches in a tub, will they all be restored or only those facing UV light? Best regards, Andy, Belgium.

  2. You will need to stir them up for the process to work evenly as I found out when I did my in a large clear salad container in my driveway under the summer sun. I used a big wok spoon to stir them up every once in a while. Good luck

  3. Hello Jang,
    After you H2O2 whiten your old yellowed white bricks, have they ever turned back to yellowed again? I have had this problem and wonder if there is a way to make them stay white. Thank you.