This is what I found: http://en.wikipedia.org/wiki/Potassium_permanganate
Scroll down near the bottom where it describes "Uses".
Any thoughts about this?
I too have woken a few times in the past month with stains on my hands... it looks like a rust colour and does not wash off. I go to bed with clean hands, and wake up with these stains.
I have read elsewhere that it could be related to a preservative used on fruits, this is possible for my case, as I have just started juicing fruits but mostly vegetables.
The only thing I find odd about that scenario, is that if it was from a food preservative, why does it not appear straight away from contact of the foods... it appears on my skin in my sleep.
It's bizarre... :-/
woke up with brown iodine like stains on the soles of my feet I didn't go anywhere or step in anything
I hate peppers so i know that cant be the reason. I woke up with brown/dark purple bruising like colors almost between my fingers goin down to my knuckles in the front side of my hand not the palm side. Ive noticed that most people are getting the spots on their palms but mine are on the other side and are quite visible compared to my normal left hand .
im glad that I found this post! I also had the red yellow orange peppers and woke up to discoloration in my right palm, and right foot sole.
I had red, yellow and orange peppers last night in my salad and woke up with these stains on my hands too!