What Is The Treatment For Marks In The Face?

i am having terrible marks on my face ...i need to know how do i get rid of them quickly. my skin seems unforgiving...even a slight scratch or injection marks are left behind..please advise me the cost of laser treatment to get rid of those blemishes all over my face. I am 28 year old, 50 kgs, 5.2 height, i have been having this problem since college