I've been thinking about this lately, as I've been getting some inconsistent lather each time I relather. The way I see it, there are several options (assuming you have perfect lather for the first pass). If you leave your brush in a scuttle or heat it somehow, doesn't it dry out a little bit due to the water evaporating? Then you could compensate that by doing a hot water rinse and leaving the water on your face before lathering again, but this has left me with inconsistent results. Maybe you could also not do hot water rinse, and instead add a couple drops water to the brush before relathering, but I assume this also takes experience to feel it right to get it to the same consistency. Or you could just not heat the brush at all and not rinse your face at all, but for me the brush gets too stiff if it's cold. What works best for you guys?