This is a dialectical issue, first of all, there is no material completely better than another material, otherwise the second material has no meaning of existence, two materials compared to each other, there are certainly relative advantages and disadvantages. First of all, hyaluronic acid is a kind of finished material produced, which is more compatible with the body and is also the normal storage point of the body. Hyaluronic acid injection is also known as lunchtime beauty, it is very convenient to use, and two injections will soon be ready, which is his biggest advantage. Its disadvantage is that it can be absorbed and needs to be repeatedly injected many times, some parts will have bad effects after repeated injections, the most obvious one is the nose, which will become wider after repeated injections, lacking the sense of three-dimensionality and appearing swollen bubble, which is called “Avatar nose” by the image of the beauty seekers. Fat belongs to the body’s own tissue, so there will be no rejection reaction. Fat contains many stem cells, which can lighten the spots and reduce the fine lines on the face after filling, which is its advantage. The disadvantage is that after liposuction, it needs to be treated before filling, and the operation takes longer, usually it takes 2 to 3 times or even 4 times to ensure the complete survival of fat, which requires multiple operations and is more time and energy consuming. However, in contrast to hyaluronic acid, fat is your own as long as it is viable, and there is no question of how long it can be maintained. There are some candidates who are very thin and weak, so it can be said that no fat is desirable, and it is difficult for a clever woman to cook without rice, so the doctor naturally cannot carry out the fat transplantation filling, and can only take the way of hyaluronic acid. To sum up, the hyaluronic acid injection process is very simple, but not permanent. The fat grafting process is troublesome and needs to be done several times, but it is permanent once it is viable.