kashrut 2

Question

So rabbi why arnt the release agents put on a pan to make the food come off easily a problem, they dont have to be listed but yet it might not be kosher. and if the answer is thast its batel beshishim isnt that only bedieved? p.s. im realy sorry if this question is annoying because im sure its been asked and answered many times, but im just having problems explaining this psak of just checking if the ingredients are kosher to other people and i just want to get it down once and for all. I trust you and your father 100%, please dont think im questioning the psak. thank you