I got bleach on my face about 3 months ago. the mark left a scab which fell off after about a week and left a red mark in its place. it's faded a bit since then but is still visible apart from my surrounding skin. the curious thing is that it turns darker red if I brush my teeth or bend over, which diminishes after about a minute. it's not raised and is the same as surrounding skin but a different color. Is this Post inflammatory hyperpigmentation or a scar? What do I do I don't want a red mark on my face forever!