I am 35 years old. I used to get razor burn all the time when I first started shaving. I remembered a scene in good morning vietnam- with the guy on the radio suggesting the use of Cold Water to Shave.
I have been shaving with cold water since 1994, and I've not had one case of razor burn since then.
I use either irish spring soap lather or barbasol shaving cream. I never use aftershave.
I had to say something here, because this subforum seemed strange to me.
USE COLD WATER. I've even gotten some ladies to do it. It works!