How do you make a scab go away in 2 days?

If you want to remove a bruise in about 2 days, I read elsewhere that you can rub a little bit of vinegar using a cotton ball, then after using an ice pack, use a heating pad to dilate the blood vessels.

http://naturalremediesforyou.com/bruises.aspx

That's probably the best remedy for a time period of two days.

You can also get rid of it within a day by massaging it very strongly, although you'll want to practice that a bit before getting down the actual technique that works for you.