In July, I had mid-cheek Resylane and under-eye skin boosters. In September, I had Light Eyes treatment and immediately acquired large festoon bags along the top of my cheekbones, which have now reduced but are still visible. Yesterday I had 1,500ml of hyaluronidaise injected along the festoon and under-eye area. Today I am very swollen, so need to wait. Until then: 1) What is likely to have caused the festoon bags? 2) Is there any other way to remove them? 3) Might the damage be permanent?