I shaved this morning, using luke-warm water, almost room temperature. As I mentioned before, I had noticed yesterday that I had a slight redness, not really irritation, just a touch of redness after my shave, and I wondered then if I'd used water that was too hot. I must say, I had no redness this morning, and the shave was very comfortable, although I did miss the hot water in my prep. I'll experiment a little more with this. In any case, my face after the shave this morning with a Merkur HD, Red Personna blade and Speick shave cream was BBS!