I tried dermabrasion (basically microdermabrasion’s rougher sister) two times. My skin felt noticeably smoother for a while, but the healing process was really tough. I thought it was pricey, but would recommend looking into it.
I always just say drink a lot of water—that’s about as natural as you can get! But my friend back home has tried applying aloe vera or olive oil to help fade her scars. I’ve also heard of using honey. I’d definitely do a little research first, but those are a few ideas that may not hurt to try.