I had fat grafting because I didn't have any fat in my eyelids, and it's been a year now. It's completely taken hold, and my eyelids were very sunken, but now I have the same amount of fat as a normal person, and I look much younger than before. But I don't think there are no side effects. The injection scar is slightly yellow and protruding like a hypertrophic scar, and it hasn't gone away even after a year.. I called about it in the 3rd month, and they said it would definitely go away and to wait 6 more months. It's been 6 months since the surgery, and when I called again and it's still like that, the female employee who has been so kind up until now said in a hoarse voice that she told me to come over and give me the injection. There's a slight scar, but it's a scar that's only visible to my eyes, so I haven't gone yet because I'm afraid of any side effects from the injection . Anyway, I don't think there are any side effects at all. Still, I don't regret having the surgery.