What dissolves the plastic in cars is insect repellent that contains Deet. If you read the label it says it dissolves plastic. Found this out the hard way on our previous car. We thought is was lotions and sunscreen at first also, but it turned out to be the insect repellent containing Deet.KTPhil said:No, but on a related note... does your '06 have the same texture on the sill that it has on the dashboard (as distinct from the former flat painted surface)? If it has the older surface, be VERY careful not to use sunscreen or other lotions on your arm. Many have reported that such lotin will remove the painted coating and spoil the sill surface.