burns [SEP] i have been using this product for a week or two right on my t zone and on top of the booster serum it made my foundation slick and goopy so i was just using it at night okay at firstthen it started to sting a bit hey i figured it was working then nights agoooooowww got up to look in the mirror and my entire t zone looked cooked washed it off and everything was fine last night i applied just the booster serum and all was well again note i do not have sensitive skin yikes