Does anyone here suffer with or have tips for defeating shaving rash?

MooCow

Ditch the fusion!
There are so many blades that you tend to get multiple blades on a single hair and it tugs at it rather than cutting it. Bloody awful razor, I suffered with the same thing till I got rid. You are also doing like four passes each time scraping your face with it.
Although I now have a beard, never suffer  issues with skin burn any longer from shaving - I use a straight style with replaceable blade for trimming my neck, round the mouth and cheeks.
Prep your stubble - face wash or similar softens the hairs. I personally use shaving oil as it's easier to see my beard line. Keep the blade clean with water.
Rinse your face, pat dry (don't rub!) and follow up with a moisturiser - I like Rock Face myself, but find one you like the smell of etc - some of them are more like grease than a lotion.

lowmans100

Use clippers, these cut the hair leaving a short stub outside the skin. For me close shaving with a razor means the hairs curl back under the skin causing the rash (and infection). I have not wet shaved for many many years.

I use an older version of these Detailer - Wahl UK