Which chemicals damage bezel inserts?

[Onikage]

I took my van to be hand washed and the very first thing that he sprayed (traffic film remover?) spattered on my bezel. I noticed it but didn't think anything of it. It just looked like soap. I washed the watch as usual and it looked perfect again. It does, in artificial light but in daylight it seems to be a slightly brighter colour where the spatters were. I've since cleaned the watch properly with a brush and it is no different. I'm just glad that the spots are only tiny and only I would be able to find them because I know where they are. I'm happy that it wasn't a big splash. I'm keeping it covered the next time!
Does anyone have any experiences of this, any particular things to avoid?