I underwent lumenis CO2 laser 9 days ago, on the 7th day when I was drying my face the towel got caught on the crust and it made the crust bleed. The area is still tender and i've been putting vaseline religiously. Will the crust/scab fall off when the wound is healed or should i take it off? Should i be concerned with sarring? Same condition with upper eyelid on the left eye.