I went to a day spa for microdermabrasion and she recommended I get a cosmelan treatment. She applied the treatment and told me to leave it on for 9hrs.
Day 1 my skin was lobster red and swollen. Then day 2 was even redder, cracked and blistered. I thought is was running its natural course till my eyes(almost swollen shut) & unable to open my mouth(blistered). This continued for 4 days till I went to my MD and she said that it was an allergic reaction and gave me a steroid shot.
My mistake was not having it applied by nurse/MD.