Treatment for Chicken Pox scars (white and depressed)

What do you recommend for old chicken pox scars. They are slightly depressed, white and shiny, and in my upper lip region and as you can see from the pic, hair no longer grows in the area of the scar. I have heard conflicting reports on whether dermal fillers (such as juvederm) can help with the depression. The last thing i want is for the filler to disperse "around" the scar causing a more depressed appearance.