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Forums » Pony Talk » Pony Corral » Yellowing/Mold treatment using H2O2?
Yellowing/Mold treatment using H2O2?
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Gizmo
Bay Breeze Pony


Joined: Nov 19, 2004
Posts: 756


PostPosted: 0    Post subject: Yellowing/Mold treatment using H2O2?

This is something I've been interested in for awhile, I had success whitening and removing mold spots on white and yellow ponies using RemoveZit but hydrogen peroxide seems to have wider affect and overall easier to use, although it's risky and has its share of pros and cons.

This method has been used successfully among Transformers and GI Joe collectors, here's instructions written by kup from otca.com.au:

Quote::
Need:

- Get a clear glass jar with a seal tight lid (I use an mayonnaise jar like this one with the label removed)
- Buy a Jar of Hydrogen Peroxide with at least 6% w/v from a Pharmacy or Super Market (Pharmacy is more reliable)
- Fill the glass container with the appropriate volume of Hydgrogen Peroxide depending on the size of the yellowed piece.
- Once the piece is submerged, expose the jar to sunlight for a few days (oh the irony! ) until the plastic color is 'corrected' to your satisfaction. During this process you will see thousands of small bubbles covering the surface of the plastic - This is the Hydrogen Peroxide at work.

Advice: Try not to have too many pieces of plastic in one jar. The crowding of pieces slows the process as they shield each other from sunlight.

Note 1: Some plastics are more successful at regaining their color than others but something that seems consistent from my experience is that there is always a considerable improvement. It seems that different plastic types regain their colors at different rates - The level of yellowing is also a factor in the length of the submerged time period.

Warning: Hydrogen Peroxide is corrosive to metal. However from what's available in retail, the level of concentration is so low that it seems negligible. I have not seen any corrosion in metal rods and pins joining plastic parts even after being submerged for a couple of weeks.

Warning 2: Although most painted parts will not be affected by the Hydrogen Peroxide, there is documentation that some do. Toys with painted detailing which fades with exposure to the Hydrogen Peroxide includes: AM Megatron (Purple).

VERY IMPORTANT WARNING:
Hydrogen Peroxide is also toxic so try to avoid exposing your skin to it. Try to use gloves and if it goes on your skin, wash the affected area immediately.

Note 2: I have used this process in at least half a dozen toys without any ill effects to the plastic even after more than a couple of weeks submerged. It's been about a year's time since my first attempt and the plastic of the toy in question is still fine. However regardless of success, the plastic is still vulnerable to yellowing again if exposed to UV rays because that's the nature of the plastic.

Disclaimer: Although I have been successful with several toys using this procedure and I have not observed any ill effects on the plastic - there is no guarantee that it will work for you and there is always the possibility that some plastics may not react well to the Hydrogen Peroxide so proceed at your own risk.

Notes specific to Grotusque:

Grotusque has a big pin that joins his legs together - You cannot remove this without breaking the plastic. The best thing to do so that his yellowing can be fixed is to separate the whole 'legs' assembly and remove every single screw that you can find so that you don't have to unnecessarily expose them to the HP. Unyellowed plastic does not seem to be affected by the Peroxide but still try to separate as many 'healthy' pieces from the assembly as possible.

The top half of the body is easy to separate so if its just the shoulder, you shouldn't have any problem removing the affected piece.

www.otca.com.au/boards...php?t=7003


Here's amazing before and after pictures taken by catilla from www.thetf.net:




Many more pictures and information can be found here:
www.thetf.net/forum_po...4-PN-1.htm

I'm thinking of testing this method on a few baits, but would like to know first if anyone tried it on MLP?

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LilSpark
Corral + Dollhouse Moderator
Corral + Dollhouse Moderator


Joined: Jan 26, 2009
Posts: 19966
Location: Rainbow Road

PostPosted: 0    Post subject: Re: Yellowing/Mold treatment using H2O2?

I found all the same stuff a while ago because I wanted to rescue my one DC which is yellowed. Didn't work... But the pony plastic is softer than playset ponies. I think you should try it on a bait.

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22spot_ladybird
G3 Rosey Pony


Joined: Sep 22, 2006
Posts: 8998
Location: Scotland

PostPosted: 0    Post subject: Re: Yellowing/Mold treatment using H2O2?

No idea if anyone's tried it before but I think it would be worth it Smile

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hilamb
Twinkle Eyed Night


Joined: Apr 22, 2009
Posts: 2368
Location: Finland

PostPosted: 0    Post subject: Re: Yellowing/Mold treatment using H2O2?

Hmm interesting. If someone will try it id love to see the results. Smile

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Oneleo1
Naughty Monkey Corral Mod


Joined: Oct 23, 2003
Posts: 17122


PostPosted: 0    Post subject: Re: Yellowing/Mold treatment using H2O2?

I thought someone had tried it on a bait, I just can not recall what the results were...

Perhaps I can find the thread about it Smile I'll look when I get home.

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flowersinherhair
Colorswirl Pony


Joined: Jul 10, 2007
Posts: 365


PostPosted: 0    Post subject: Re: Yellowing/Mold treatment using H2O2?

A few months ago I tried treating a very discolored Cherry Treats with hydrogen peroxide. It was only a 3% concentration, which is what you can usually buy in drug stores. I left her submerged in it for a week (I did the head first so I could compare it to the body), and away from sunlight since sunlight is what made Cherry Treats discolor in the first place. In the end, it didn't make her white again, although it did sorta brighten her up - I think the H2O2 did a deep cleanse or something, and removed some dirt that ordinary washing couldn't get rid of. So, she came out looking fresher and cleaner, but no less tan! The good news is that it seems pretty safe: it didn't harm her body or paint at all. I can't say if it would be safe for hair, because I removed hers (it would definitely be bad news with a tail washer in place). I think the problem is that ponies are made of porous vinyl, so the discoloration is embedded in their bodies, whereas discoloration on hard plastic is just on the surface.
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emery
Dr. Quinn, Medicine Pony
Dr. Quinn, Medicine Pony


Joined: Jul 21, 2005
Posts: 13646
Location: Illinois

PostPosted: 0    Post subject: Re: Yellowing/Mold treatment using H2O2?

I used hydrogen peroxide to white the buggy that comes with baby Cuddles last year. You can see all my before and after pics in the thread here:

www.mlparena.com/Forum...10048.html

Here's the basic transformation though:

%20%20%20
Before picture __________ August 9th __________ August 11th __________ August 16th

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hilamb
Twinkle Eyed Night


Joined: Apr 22, 2009
Posts: 2368
Location: Finland

PostPosted: 0    Post subject: Re: Yellowing/Mold treatment using H2O2?

Thank you emery for the thread link. It really has some grewat effect. Smile

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MsGatamon
Brush N Grow Pony


Joined: Jun 20, 2010
Posts: 330


PostPosted: 0    Post subject: Re: Yellowing/Mold treatment using H2O2?

Thanks for the tip. My husband is interested in collecting old Transformers and G.I. Joes. Shame it wont work on softer plastics I have some G3 ponies showing yellow on muzzles and ears.
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