Unfortunately driving season ended and winter arrived quicker than I thought this year and didn’t get to wash bugs and dirt off before putting the car away. I’m still in gelcoat, are there substances in waterless car wash that I don’t want getting into the body before bodywork and paint?
I bought one and when I got home noticed it was wash and wax. Said it had carnuba wax in it. I figured better not to be putting that into crevices in the seams.
Did some research and the interweb says some have silicone which I know not to go near.

What’s safe to use to wash in my garage? Thankfully heated.