I had skin grafting done after having a bad third degree burn near my elbows on both of my arms. It has been 18 months and the scars are still there.
At first, they lie flat and are really red and dark brownish, then overtime they change to more of a normal skin color, yet in my experience never fully change back to a normal color. they itch pretty bad for the first few months, and every once in awhile they can sting. Now, 18 months later, they have fully healed yet are slightly raised in the middle of the skingraft site, about a centimeter high. This bothers me, as it is very noticable and I get asked about it all the time, so i am planning on having a scar reduction surgery where they go under the scar and take out some of the scar tissue.
I went to a really great surgeon to begin with so I know its not because of lack of skill from my inital surgery. Everyone heals different, and this is just how my scars healed. The scar will be different depending on the thickness of skin grafting your getting done, i had to have a split level graft, so someone who had to have only a very thin layer of skin applied might have a smaller scar later on.