How do I get my cake plates and pillars back white? They are turning yellow.

You know there are many remendies around but I have yet to find any of them work well
As my DH was fond of saying........that's why they make/sell new ones

I have hear of & tried "Iron Out" (or is it rust out?) that you find at Wal-Mart in the plumbing dept (or where the toilet bowl cleaners are). It helped a little.
Yrs ago someone said she covered them in sugar & put them out in the sun where the bees ate the sugar off then they were white (??)
Another said she weighted them down in the swimming pool for a couple of days.

Lemon juice and sunshine take out stains in white clothes....and I used to remove formula stains from baby clothes with equal parts Cascade dishwashing detergent and bleach..............

Try Yellow Out, that works the best of all I have tired. I had a friends plates and they were really bad, soaked them in yellow out for several days. It did help alot, not perfect but much better then they had been.

There is a new spray paint by Krylon called Fusion made specifically for plastic. It comes in several colors, including white. I have a tall tier cake stand which I bought on eBay which was horribly yellowed when I got it. I tried a lot of remedies to whiten the plastic, but with no success. I was about to give up when I saw the paint at WalMart. It looks almost good as new. Since my cakes have a cardboard circle underneath, and the plates don't come into direct contact with the cake, I feel secure in knowing it will not be a problem.
Just a suggestion.

I'm with those who say just buy new ones. As I understand it, the yellowing is not just the surface ... it actually penetrates the plastic. In the grand scheme of things, they don't really cost that much. Heck, I leave 'em with the bride on some cakes. I don't want them back and I dont' charge for them. It's just not worth the gas and bother to return $8 worth of plastic plates.

I don't know if this will work with plates and pillars but it always works for me when dishes (eg mugs and so on become stained by tea, or melamine plates when they become yellow from curries).

First is to soak them for several hours in water with a baby sterilising tablet for several hours and then wash with washing up liquid and warm water.

The other method is to soak them in warm water with generous amount of washing powder for several hours and then wash them with washing up liquid and water.

Hope it works.

Have you tried a diluted bleach solution? I use it on my counter-tops and it even gets out red kool-aide stains. I use cake plates under my cakes so I haven't run into this problem. GL