The instant you suffer a scrape, cells in your blood rush to the wound and seal it. Eventually, this clot dries and hardens into a crusty protective scab. Resist the urge to pick it.
If you look at a scab, it probably just looks like a hard, reddish glob. But under its surface, all kinds of things are going on. New skin cells are being made to help repair the torn skin. Damaged blood vessels are being fixed.
White blood cells, the kind that fight infection to keep you from getting sick, go to work by attacking any germs that may have gotten into the cut. White blood cells also get rid of any dead blood and skin cells that may still be hanging around the cut. By the time it’s all done, a new layer of skin will have been made.
Eventually, a scab falls off and reveals new skin underneath. This usually happens by itself after a week or two. Even though it may be tough not to pick at a scab, try to leave it alone. If you pick or pull at the scab, you can undo the repair and rip your skin again, which means it’ll probably take longer to heal. You may even get a scar.
Picture Credit : Google