You're right about the silicones though I think Mr Sheen became silicone free some time ago. However: Ingredients Contains 5-15% Aliphatic Hydrocarbons, <5% Non Ionic Surfactants, Also contains Perfume, Limonene, Hexyl Cinnamal, Geraniol, Preservative (Methylisothiazolinone & Methylchloroisothiazolinone) Not really stuff you'd want on a car. Basically a degreaser solvent blend which will remove wax. There won't be much Limonene in it but: "Limonene can remove oil from machine parts, loosen postage stamps and strip paint from wood. Like acetone, limonene can dissolve polystyrene so can replace acetone for polymer applications. To prepare tissues for histology, D-limonene can replace xylenes for clearing dehydrated specimens."