Hi, I injured my forearm about 1 inch below my wrist on the side of my arm by a fish tank that broke and it scraped my skin it's about 1 1/2 inches long and 3/4 of an inch across, the skin that was scraped is still on there but not covering the complete injury, the skin flap is turning color red/and tip black, I have been keeping it clean and using neosporan and keeping it wrapped, I allow air to it a couple times a day it appears to be healing however I am worried about that flap that is appearing it is dying? will it eventially fall off?