Natural Scars Treatment For Mosquito Bites On Legs

hi hm i got some very old mousquito scars on all over my legs, most of them are so old that u can actually see them but r light but still it makes my skin look dirty. can u please tell me a natural way to lighten them more so that u can't actually see them. and also i don't really care aabout how many months it takes cause i'm not in a hurry but still i want them to lighten. thanku