I just tried this the other day, and I know it seems weird, but it worked very well on my upper lip immediately after an electrolysis appointment.
interesting - i was told the same by an electrologist - the ingredients in prep h are similar to what’s in topical numbing creams (so I’m told).
1% hydrocordisone creams work great after waxing, to reduce redness and swelling. I wonder if they would work for electrolysis?