oh goodness. All sorts of problems. ky and astroglide both had a tendency to trigger infections. ky in particular made my bum burn. Everything I've tried that tingles, cools or heats has been horrible, and also boner killers for my booboo. One lube seemed fine starting out but after 5 minutes seemed like it'd made me more dry than I was to begin with.

I sometimes wonder how some of those products sell at all...