Some beauty seekers have left me messages asking me if hyaluronic acid can really be filled endlessly for a lifetime. Will filling again and again affect the skin? Because filling in hyaluronic acid will definitely prop up the skin, then after the hyaluronic acid is absorbed without support, its position will definitely be more saggy and saggy than other positions, so is hyaluronic acid filling a bottomless pit? The first thing we need to make clear is that the location where we need to fill hyaluronic acid must be an aging depression, and I have always been opposed to filling a birthday head. That after hyaluronic acid filling, it will only smooth out its depressed parts and will not be higher than the surrounding skin tissue, otherwise it will be a bag and not beautiful, so it will not hold the skin open and will not be more sagging after absorption. So is hyaluronic acid filling a bottomless pit? Generally speaking, hyaluronic acid takes 8 to 10 months to absorb, and the absorption time will vary depending on the degree of cross-linking. But can it be absorbed 100% every time? Not really. For example, if you fill in 100, you may end up with 10 to 20 left, and after repeated filling, there will be a certain amount of stacking. As for whether the filler will become more saggy, for example, the nasolabial folds, you can look in the mirror and see that there is not much sagging in itself, but it is sagging with the overall sagging of the face. And when it comes to filling, it is all proper filling, not that it is more serious to hit two bags, that is from aging to deformity. For example, the filler of tear trough is just smoothing out the sunken area, not that hitting two small bags, after hyaluronic acid is absorbed, it will also sag with the overall sagging, it is synchronized. From my experience, hyaluronic acid fillers do not cause accelerated sagging of the skin.