Is this scrape healing or is this "slough" tissue?

[mollybrown8]

I had an accident that resulted in a scrape across my face from contact with some loose bricks. I am worried that it isn't healing properly. The day after it happened, I panicked because I had to work all day, and covered it with makeup. It was cream foundation. I powdered it slightly. I am worried that I have infected it because of the make up. It is swollen around the bridge of my nose, and under my eyes. The swelling increased on the 3rd day, yesterday, and is about the same today. It itches slightly. I have experienced a few allergic reactions to face washes or creams, this is a lot like what the swelling feels like. The pain is greatly reduced, there was some throbbing  when I had make up on, but not any longer. The yellow tissue is dry though, like a scab. Not moist. I have been cleaning it with a diluted vinegar mixture a couple times a day, and a salt water solution a couple times, applied with a cotton ball. I did put petroleum jelly over it for a few hours. But it softened up, and scared me. Then of course, the Internet diagnosed me with death or amputation. How should I proceed with treatment?

  Thank you. Any input is appreciated. Have a nice day.