Did TCA 25% peel at home. Almost immediately chin and the skin between my eyebrows frosted (about 1 min or less) but nowhere else. I let it sit for a few more seconds and between the burning and worrying about the frosted areas, I rinsed off with water. My entire face peeled to varying degrees but I did not get the results I desired. Next time how should I go about so I can get more areas to frost? How long can the 'frost' remain on skin while waiting for other areas to frost? Thanks!