In the spirit of rediscovered self-experimentation trail-blazed by Seth Roberts -
http://www.blog.sethroberts.net/2010/06/04/a-great-change-is-coming-part-1-of-2/
- I thought I would share one of my own discoveries:
i.e. that benzoyl peroxide (BP) cream (which is marketed as a treatment for acne) can treat shaving rash.
http://en.wikipedia.org/wiki/Benzoyl_peroxide
By shaving rash, I mean the unsightly spots which come after shaving, especially on the neck. The spots seem to be due to trauma of the beard hair follicles, and sometimes to in-growing beard hairs.
Anyway, an n=1 on-off crossover self-trial over several weeks established that this kind of rash was treatable, indeed curable, with BP.
Benzoyl peroxide is a peeling agent, so it is not particularly surprising that it works to treat this kind of problem.
HOWEVER, BP is also a bleaching agent (not surprizing for a peroxide!); and after a while I linked its usage to the bleached patches that appeared on towels and shirt collars, ruining them.
So, in the end I could not use it to treat the beard rash.
But it works.