I cut a part of the skin on my head due to which I lost hair in that part. Will any hair grow back in that area?

Not on scars. Hi. Was the area shaved for stitches? Hair follicles don't grow out of scar tissue, but if the scar is narrow, and the surrounding skin is making hair normally, when it grows back, the scar may be barely noticeable. Your "topic tags" mention baldness and alopecia...those don't grow back normally! Good luck!