Originally Posted by
Ryan82
True razor bumps are ingrown hairs caused by shaving hairs below skin level. 99% of the time this is due to ATG shaving and can be cured by avoiding ATG.
I was plagued by razor bumps for years, for the simple fact that I didn't know how to shave. However, my experience does not match with yours at all; usually the bumps appear the following day and will last for a few days - even more if you attempt to shave over them before they heal. I'm sure others will tell you as well that they don't clear up after a couple hours.
My guess is that you could be shaving with a slightly toothy edge that is irritating your face, especially in sensitive areas.