It burns!!!! Your skin that is! Found out the hard way. I was using the Bondo Resin with the fiberglass cloth to line the inside of my bucket, I had rubber gloves on, but ended up rubbing the sides of my forearms all in the Bondo unknowingly, then the pain hit me! Yowzers!!! Not only does that stuff stink like gigantor radioactive Godzilla Turds, but it burns like Napalm and sticks twice as bad!!! Water don't help, soap and water don't help, orange juice don't help, you just gotta wait it out, and scream, curse and cry in the mean time. It petrified my arm hairs and permanently pasted them to my forearms. I waited for it to dry and had to give myself a girlie little shave down. So now I have bald spots on my orangutan like appendages. However, I did discover a better way to remove it from your skin that works like magic...Baby Oil!!! Go figure.