I bought some Nivea Post Shave Balm (Sensitive) at the local store, and have used it for the past two times I shaved (first two attempts at straight razor shaving, btw :P). Thing is, it seems to burn quite a bit if I rub it on after rinsing with cold water. If I wait a short while, it doesn't seem to burn, but wouldn't it be too late to serve its purpose then?