Infections and color changes in the skin are some of the most frequent outcomes of surgical methods for scar tissue removal.
Common methods to make it less visible include dermabrasion, chemical peels, laser skin resurfacing.
Dermabrasion, and chemical peels are for removing the top layers of ski and replacing it with fresh, new skin which lies below, so they may not be effective to remove scars at a particular site.
There are creams available which claim to lighten scars; one such is Vit E cream, which is said to speed up the healing process and also to lessen the appearance of the scar.
You can apply it on the scar area and see if it improves.
Your other option would be laser which allows for precise control of the treatment and would be a better option for you.