Hi, a few years ago I had major abdominal surgery which left a very long scar. I was advised to use vitamin e oil on it, as often as possible. As a red head I'm supposed to scar badly, but I have to say that although the scar is long it is very thin and a few years on has faded to a silvery thin line, and isn't that noticeable considering its length.
I used vitamin e capsules, broken open with a pin and squeezed the oil out. I kept a bottle and pin on top of the toilet and applied it whenever I went to the loo.
Solar oil contains vitamin e so I suppose it would work as well, but maybe the more concentrated the oil the better. I also took vitamin e capsules. Don't know if this helped, but I am very pleased with the results.
Hope you're recovering well from the surgery.
Flitch