I need something for the pinkish dark mark my cold sore left behind. again for the mark please. i don't have the cold sore anymore. please?

PIH: It sounds like it might be "pih" (post inflammatory hyperpigmentation). This is more common in darker skin. It should fade over time (few weeks- few months). A bleaching cream might help but can be expensive and may overbleach. Try just basic aquaphor or vaseline before bed to keep it moist and allow it to fade quicker. Just have it looked at though to be sure by a dermatologist. Good luck!