I've been shaving with a DE for around four years. Only up until last year, I started to get razor burn; not constantly, but enough to be concerned. I just ran out of the 2oz size and I haven't seen a single red spot since. I shave with Cremo Cooling shave cream, so between the cream and The Cool Fix, I barely need the coffee to wake me up.
I've always struggled with razor bumps, ingrown hairs, redness, etc. on my neck and face after shaving. This stuff works wonders and has helped significantly reduced all of those issues for me.