Answers.Body: <p>Lego bricks typically turn yellow due to a chemical change that occurs when UV light interacts with flame-retardants in the plastic. So bricks stored in darkness shouldn't turn yellow at all. </p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2018-01-01T09:06:51.397Z
Answers.Text: @CalebWoodman, "indoors" isn't enough.  "Indoors, away from direct sunlight and south-facing rooms" is more like it.
Answers.UserDisplayName: Mark
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-05-20T15:43:21.983Z
Answers.Text: Yes, like your answer says, 45 minutes after I posted it.
Answers.UserDisplayName: Mr. Shiny and New 安宇
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-05-20T20:05:37.860Z
Answers.Text: Ok, ok, let's keep the peace here! Caleb answered it hours earlier, but I appreciate details in both of your answers. I agree with Mr. Shiny that they're not even a little bit yellow-proof. If they're better than a decade ago, great, but it's still a major problem, especially with the color white.
Answers.UserDisplayName: Sharkfin182
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-05-20T14:09:34.257Z
Answers.LastActivityDate: 2016-05-20T14:09:34.257Z
Answers.UserDisplayName: Mr. Shiny and New 安宇
Body: <p>I was wondering if anyone has opened a sealed set like Taj Mahal or Star Wars UCS Imperial Shuttle after it had been sealed for years, and if so, were the white LEGO elements still perfectly white, or did they fade or yellow even while sealed? I'm debating about buying an expensive UCS Imperial Shuttle that's still sealed, instead of Bricklinking, just so I can have one looking brand new, but wanted to know if it might already have faded or yellowed even while sealed.</p>
  
Tags: <colour><preservation>
Title: Do WHITE LEGO elements fade or yellow while sealed for years, or do they stay their perfect white original color?
UserDisplayName: Sharkfin182
ThreadText: # Do WHITE LEGO elements fade or yellow while sealed for years, or do they stay their perfect white original color?
  
  (Asked by: username_0 on 2016-05-20)
  
  I was wondering if anyone has opened a sealed set like Taj Mahal or Star Wars UCS Imperial Shuttle after it had been sealed for years, and if so, were the white LEGO elements still perfectly white, or did they fade or yellow even while sealed? I'm debating about buying an expensive UCS Imperial Shuttle that's still sealed, instead of Bricklinking, just so I can have one looking brand new, but wanted to know if it might already have faded or yellowed even while sealed.
  
  **Tags:** colour, preservation
  
  
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  ## 1 answers
  
  ### Answer by username_1 on 2016-05-20. Score: 5 | Accepted answer
  
  Lego bricks typically turn yellow due to a chemical change that occurs when UV light interacts with flame-retardants in the plastic. So bricks stored in darkness shouldn't turn yellow at all.
  
  > **Comments:**
  > **username_1**: Yes, like your answer says, 45 minutes after I posted it.  
  > **username_0**: Ok, ok, let's keep the peace here! Caleb answered it hours earlier, but I appreciate details in both of your answers. I agree with Mr. Shiny that they're not even a little bit yellow-proof. If they're better than a decade ago, great, but it's still a major problem, especially with the color white.  
  > **username_2**: @CalebWoodman, "indoors" isn't enough.  "Indoors, away from direct sunlight and south-facing rooms" is more like it.  
  
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