I didn't start shaving with warm/hot water until I started shaving with a str8 razor. The first thing I noticed with warm/hot water when I was younger was the razor burns. even now if my face feels a little tender for wind burn/sunburn ect... I return to the cold water knowing that I will have no ill effects. I do miss the warm lather but I say for me it is a fair trade off. The other plus to a cold shave... that stuff will wake you up in a hurry.