Hi there!!!
One little explanation for the "scars"...
They're not scars... It's just the "little bag of salted water" that is doing "waves"
It's frequent to persons who did boob jobs...
You have two choices:
1/You have the silicone choice
2/Or you have the "salted water bag" choice-----> well sorry for the inconvenience; dunno the "scientifical" name.
Ha and a last point; i saw a document about the "salted water bag" on TV the specialist said that the liquid isn't dense enough that's why you'll have the "waves"
Hope that helps...