Potassium Permanganate Crystals stains on penis glans

[LegendOfCargs]

Hello,

I was just preparing a deluded solution of potassium permanganate crystals and water to use as a fungal treatment on my foreskin/penis glans as advised by my dermatologist and accidentally spilled a small amount of crystals on my glans and foreskin (not even I know how I accomplished such a feat).

Anyway, now there are small brown stains present on my inner foreskin and glans. I washed the area with warm water and soap free wash, but that obviously did nothing about the stains. I read online that strong chemicals sometimes do the trick, though that is not an option in this scenario.

Is there anyway to remove these? Or do I just have to wait until they disappear on their own?