How to treat scar hyperpigmentation,how to smooth texture?Will depression by kenalog fill in time?Will microneedling help(photo)

Hello Sarah1430,Sorry to hear about your experience.  As far as what to do now, I would be on the conservative side.  A lot of what you are seeing is the pink color as the body heals the injury you had.  It can take up to a year for the pinkness to go away, and using somthing like BioCorneum to help prevent a tan there can be of benefit.  The area certainly is derpessed.  I don't know what it looked like when you received the injection, but none of hte pictures you included looked like a hypertrophic scar.  A hypertrophic scar is elevated above the surrounding tissue but yours looks depressed.  The concept of doing microneedling is to helps stimulate collagen and elevate up the depressed area.  The results are not very dramatic but it may improve it slightly.  I would also recommend the use of temporary fillers to help elevate up the scar to the level of the surrounding skin.  That can be quite helpful.  In order to determine the best plan for you, I'd recommend you consult with a facial plastic surgeon.  I hope this helps and good luck.