It has been about 4 to 5 years since the surgery.

The skin of this patient looked as if she got a burnt. 골이 패이는 것을 connected all the way to the forehead. 

I can't say for sure if this has anything to do with the use of silicone but there is nothing wrong with any other part of body but only the part where the insertion of silicone took place. That is why I am mostly dubious about the use of silicone.
See the spot with a blue arrow. The silicone lining is too clearly showing.