What is the best way to get rid of scars on the face?

My friend had a little fight and got scratched up on the face. His skin is a darker color in the areas where he got scratched. What can he use now or is it too late to get rid of the scars. Please help the poor guy is desperate.|||your friend could go to a dermatologist to see what methods would work for him (surgery, laser treatments, prescription ointments, etc.) or he could try an over-the-counter ointment/cream like mederma.|||uhm rosehip oil but it might nt be strong enough