Anyone else had this ? My car is 6 months old and I've never seen anything like this before - none of my army of cleaning products are able to shift it. To me it looks like hard water staining but I've never had a problem with similar trim pieces on any other car I've had. I use a branded snow foam think its Auto Finesse at the mo and Gyeon range of products for cleaning. So any ideas why this has happened and also how to prevent it happening again ? I've resigned myself to not being able to remedy this so have ordered a new pair at £27 the pair including VAT but I don't really want to be replacing them every 6 months. Thinking maybe of putting a coat of clear lacquer on them ?, maybe there is a protective cleaning product I can coat them with from new ? Cheers !