A few posts back, I posted saying I was going to OP while doing a detox bath. I've not managed to do that yet and the only other change other than OP is that I have taken Oxypowder the last two nights to start my cleansing off. This morning, while cleaning my face in the usual way, the cotton wool was black. It's never usually dirty first thing in the morning and even at the end of the day it's never been as dirty as this. I have started OP when I get home from work as well. Has anyone noticed this and can this be a sign of something happening?