Have you tried Vitamin E capsules? Break open the capsule and rub the oil on the scars? I have heard of post partum women do that to their stomachs for stretch marks. Or aloe vera perhaps.
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Bio Oil,
Pricey but it is a magical oil, scars are what it specalises in and it does it very very well!
Here... Bio-Oil
They wont dissapear overnight but you will see good results after a few weeks.