I use whatever is around the house, which is sometimes hydrocortisone cream but is usually diaper rash cream, the kind made with cod liver oil and zinc oxide. Both work very well for me. What do you use?
I use bag balm to cure just about anything skin related. I had some really bad sores when I was riding 500 miles a month. I ended up using my daughter's Boudreaux's Butt Paste worked like a charm. For my pre-sore treatment I recently switched from Bag Balm to Beljum Budder. It seems to stay slippery for the entire length of the ride as oppose to the Bag Balm which eventually gets absorbed into the chamois. Plus is safer with my synthetic chamois. It still ends up making my saddle shinny too... which looks cool in photos!