Hi there, I actually mentioned you, not by name, in a hub I just wrote called, Rebuild your body and in it gave a personal example from my life.
The two essential nutrients you need to consume, in great quantity, I might add are sulfur and vitamin C many other good things too, but those two are critical
Go buy yourself a small coffee grinder and start adding fresh ground Flax seed to every meal, that's where you get the sulfur, (omega 3) too. Not the oil, or store bought meal.
Molasses is also very good for this. Throw out your sugar and use it for everything you bake. Also a teaspoon full in water everyday. Get the C from fermented green vegetables, (peppers, cabbage) Guavas and citrus fruits have most. You can take pills, but you said natural, and pills ain't. If you don't know how to ferment, raw is good, but cook the cabbage for better digestion.
That's pretty much how I did it. My scar was half an inch wide and two inches long and took 2 to 3 years to completely disappear.