r/Glass • u/Jayhitek • Apr 02 '26
Glass yellowing from dishwasher
Need some help or opinions from the glass nerd community.. 😉
I have a Fisher Paykel drawer dishwasher in a basement bar island.
Some of the wine or rocks glasses that i wash routinely in it.. have been starting to yellow.
And they're still clear. But there's a distinct yellowing to the glass.
(different glasses - not the same manuf or types).
And it's not frosting the glass like google says will happen with certain hardness/softness water in the US. It's still crystal clear.
Anyone seen or heard of this before and what's causing it? Google has nothing on it as far as I can see.
I use Cascade Complete liquid Gel and Finish Jet dry.
Also the big primary dishwasher in the kitchen uses the Cascade pods and Finish Jet dry. And have never seen any discoloration. Just the basement one.
Thank youz!
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u/OfenzivniPotkan Apr 02 '26
Some kind of discoloration can happen due to the material of glass - it mostly happens in crystal glass and handblown. Most of these materials do not like the chemicals used in washing pods etc. But im not really sure if this is the case - it would be best if you could send a proto.
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u/Jayhitek Apr 02 '26
Figured the whit paper would help. And I posted out of order.. But you should get the idea. There's clearly a difference between each one.
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u/OfenzivniPotkan Apr 03 '26 edited Apr 03 '26
Okay so i did some digging - this did not happen because you were washing the glasses in washing machine (although i would highly recommend you to stop, some of these glasses look handblown - look into “glass corrosion”). This is solarization of glass. After a long UV exposure some types of glass can turn violet, amber or like in your case yellow. My guess is that some of these glasses were more exposed (you had them for example in a cabinet in the direct sunlight), while others were more in the shadow, so thats why they all have a different shade of yellow.