1. use Aloe vera
, amalaki,vit.E, olive oil,cucumber.
2. aloe vera juice acts as a natural bleach, and applying it will gradually fade away the mark.
3. cucumber due to its cooling properties help in removal of scar tissues, you can make a paste out of cucumbers and directly apply on the mark for smoothness.
4. Amalaki is a good source of Vit. C which is helpful in wound/scar healing,same hold true for Vit.E
5. use Lime juice and wash with plain water avoiding use of soap and going out without use of sunscreen.
6. lastly talk with your health care professional about the same.