Hi, I found a number of ugly pink stains on the white PVC cushions of my just-purchased preowned Stingher 686GT RIB. They possibly could have been from leftover sun creams, perhaps. Anyway, I tried a few things and nothing worked.... UNTIL I tried a tip I heard of, of using OXY-10 full strength acne and pimple cream.
Applied the OXY-10 and a couple of days later all the pink stains had vanished!
I couldn't source the OXY-10 in the UK so went on eBay and purchased it from a seller in the Far East. It came in about 10 days. Evidently it had been a prescription medicine in the UK but has been discontinued here, so just get it from Malaysia etc.