We all pick up the odd bruise here and there, but rather than rush to the nearest pharmacy, use your herb patch as impromptu first aid kit.
The herb most commonly used to treat bruises is arnica, which has pain relieving and anti-inflammatory properties. It is always used externally, i.e. applied directly to the bruised skin, and ready-made ointments are widely available. If you have dried arnica herb available, steep one teaspoon of dried herb in one cup of boiling water until cool. Use as a compress on fresh bruises.
My grandma's remedy of rubbing fresh chopped rosemary on an old, greenish or yellowish bruise is not as strange as it always appeared to me. Rosemary has been found to improve blood circulation, and therefore can help fade bruises.