I had an online consultation with one doctor about getting under eye fillers to reduce dark circles I have had since childhood. He said since my skin is thin under the eyes he was not sure if hyaluronic acid would work and said a collagen filler like Bellafill would be better. I did some reading about Bellafil and saw that it can’t easily be removed like HA filler so I am a bit more cautious to try it. Is it true that HA fillers don’t work when the under eye skin is thin?