I know this is a silly question and has probably been answered a thousand times, but for some reason my lather is drying up on my face during the shave. Am I taking too long? Is my mug too hot? I've been mixing it this way for a while and never really had much of a problem, I would just add more lather to my face. It stays frothy in the mug throughout the shave, but once on my face it seems to dry up and flake off after a bit? It's strange and can't get uncomfortable... Any ideas?