Our son has a bump on his forehead. There's not scratch, just a bruise. Any remedies to treat the bruise which doesn't hurt?

A cold compress such as an ice pack or a bag of frozen peas should be applied to the affected area for 20 minutes every hour in order to speed healing and reduce swelling by constricting the underlying blood vessels in response to the cold. Do not apply ice directly to the skin. Wrap the ice pack in a towel.