De-yellowing

[Tothwolf]

On Sat, 22 Aug 2015, Dave G4UGM wrote:
> On Sat, 22 Aug 2015, Jules Richardson wrote:
>> On 08/21/2015 05:28 PM, Evan Koblentz wrote:
>>
>>>> So, how does one de-yellow something?  I have a VT-100 and some other 
>>>> gear that could use that process.
>>>
>>> Google for "Retr0brite".
>>
>> I've never tried the stuff - but is it a permanent fix, or does the 
>> yellowing gradually come back?
>
> All the techniques discussed so far involve using a "bleach" of some 
> kind and possibly UV light. Some use other materials so you have a gell 
> which makes it easier to apply.
> From what I have read yellowing usually/often/always re-occurs..

Hydrogen Peroxide, not bleach.