The warnings about head and face have to do with the risk of getting it in your eyes. There is a hair removal cream marketed to black guys for scalp/beard hair called Magic Shave. I have tried it, it works, but not as close as a razor. I can also shave with a razor in less time than it take for these products to work.These creams all use the same basic chemicals to dissolve hair, with other additives to reduce skin irritation. IF you have irritation with one, you are likely to have irritation to all of them. They all recommend a skin test first to check for sensitivity. BTW - drain cleaners use the same chemicals since most drain clogs contain hair.