Not a bad burn as such, but i did get sunburnt in the areas that aren't tanning just before i started using melanotan. It was much more blotchy, but has recently started to fill in.
I'm wondering if it's just taking my skin a while to recover and regenerate pigment after the sunburn?
to be honest I would go see a good dermatologist explain to him about your usage and ask him about the patches you developed on your face. Could be a simple solution and you don't want to aggravate it anymore. Just my thoughts.