Hi,
I had a great ps in South Africa before I moved to Beverley Hills who did a PERMANENT lip augmentation for me - he removed a layer of skin (where I had an appendix scar) and the layer of fat beneath it and put it into my upper lip. Two years later it is still there, looks totally natural, and feels soft, not hard or lumpy. I would think this is the best way to have it done. I am sure some US doctors do it. too.