Cleaning LEGO® without damage
Clean LEGO® with lukewarm water (maximum about 40 °C) and a little mild soap. Soak the bricks, brush gently, rinse, and let them air dry completely. Do not use hot water, dishwasher, bleach, or harsh cleaners: these can warp or discolor the bricks.
Whether you’ve bought a used set or want to refresh your own collection: cleaning LEGO® is easy, as long as you do it carefully. In this guide, you’ll learn exactly how to do it safely, what to avoid, and how to handle minifigures and stickers.
Why should you clean LEGO® carefully?
LEGO® bricks are made of ABS plastic. It’s strong but sensitive to high temperatures. Above about 40 °C, bricks can warp, discolor, or lose their shine. That’s why a gentle, cool approach is always best.
Cleaning LEGO® in 5 steps
- Take the set apart (or separate what you want to clean) and remove sticker parts and electronics.
- Fill a container with lukewarm water (max. ~40 °C) and add a small amount of mild dish soap.
- Let the bricks soak for 10–15 minutes. For stubborn dirt, gently brush with a soft (tooth)brush.
- Rinse with clean, lukewarm water to remove soap residue.
- Let air dry completely on a towel, out of direct sunlight. Only rebuild once everything is bone dry.
Can LEGO® go in the dishwasher?
No, we don’t recommend it. The dishwasher gets too hot and the rinse pressure can damage or discolor bricks. Hand washing with lukewarm water is safer and just as effective.
Cleaning LEGO® minifigures and printed parts
Be extra careful with printed parts and minifigures: don’t scrub hard, as the print can wear off. Dab them and use only your fingers or a very soft brush. For sticker parts, it’s best to just lightly wipe with a damp cloth.
What you should avoid
- No hot or boiling water.
- No dishwasher, washing machine, or dryer.
- No bleach, acetone, alcohol, or abrasives.
- Don’t dry in direct sunlight (can cause discoloration).
- Never submerge electronic parts (motors, lights).
Just cleaned and want more?
A cleaned set is as good as new. Considering buying an older set? This is exactly why buying used LEGO® is so appealing. Check out our inspected used LEGO® sets or expand your collection with loose parts.