...I have heard recent concerns that WD-40 builds toxic levels in your liver, and can actually kill you with enough exposure. Hell...I have used it all my life and have even washed my hands with it, and used it for attractant for Sturgeon fishing....guess I am going to die......this is second hand info, I havent actually heard anything from an expert, so with however many grains of salt.....be careful how much gets on your hands and wash them good.