I had surgery on my neck when I was about..14 and it left a huge scar. Given it was done by a professional plastic surgeon it still took years to have it level out and to this day it's still somewhat visible. In the beginning I used this gel patch (I forgot the name but I'm sure you can find it in a pharmacy) to help heal the scar. It looked kinda funny to have it on but it did heal quite nicely.
I just did a google search and found epi-derm
Epi-Derm Very similar to what I used