Hi all. The past few months around the middle of my cycle I get one or two red bumps on my chin. They really hurt! A quick google told me they're called blind pimples and caused by dirt. However I am scrupulous about removing makeup and cleanse, tone and moisturise twice a day, I also use a really good exfoliator. The lumps are here for a few days, then either turn into a proper spot (rarely) or into a non painful red lump. I'm very pale so the red marks lasts ages! Any advice please? Thank you