Using hot water beforehand was what caused my irritation. I had a dermatologist recommend using a tri-head electric razor before showering with a dry face. I bought one for $50 a few years back and it’s been a night and day difference for me. I used to get pretty bad skin irritation, despite doing all the suggested things. It’s not as close of a shave, but my skin is a lot healthier. I’ve seen some people say they’ve benefited from only using cold water when shaving, but dry shaving has been the best route for me.