For those of you who use hot water on your face before a shave, continue that practice, but give a chance to rinsing the blade with cold water a try and see how you like that. Try it for a week or more and then shave once rinsing with hot water. You might see a difference. I know I did...a big difference. I was always taught to rinse the blade with hot water and I have since changed.
I have a friend that shaves his head and he too now rinses his blade with cold water.
I was always taught to rinse with hot water, but that has changed.
I rinsed my razor with hot water while shaving for years, until recently. It's a tip from an elderly man that told me about it and I have to admit it makes a big difference. I get my face as hot as I can stand it, use a good scary sharp razor and rinse with cold water while shaving. It'll certainly wake you up in the morning, but it does give a better shave for me.