When we painted our Chassis with POR-15 we donned body suits- the stuff is nasty to try to get off- and we got a good amount of it that dripped on us as we crawled around under the vehicle. I found that rubbing a thin layer of vaseline over exposed skin right before you start the brushing process will drastically ease the removal of the POR-15 that does get on you when it comes time to clean yourself up-