get a good quality moisturiser and some vitamin E capsules ... break the capsules and add the vitamin E liquid to the moisturiser and mix well, then massage in twice a day and over time it should help the scar tissue .... hope this helps
Make sure you get plenty of zinc - that helps skin heal itself. Also you can use calendula salve on it, or aloe vera gel. I've also heard of people using Swedish bitters on the scar to make it disappear.