HELP! Garlic burn mark!!?

i rubbed garlic on my face to get rid of my pimples...i only rubbed some on and left it on for 5 mins. i washe dit off right after because it started stinging. over night, red burns started forming. i applied hydrocortisine cream and its gotten better. it still has a visible mark of a tannish color. how long will it fade out? and would it even fade away? thank goodness its summer....:[