There is a little hard lump in the skin after hyaluronic acid injection, don’t worry, this is one of the normal phenomena, it needs some time to soften and recover. About two weeks after injection, the hard lumps will disappear slowly without special treatment, if the hard lumps still exist three weeks after injection, you can use hot compresses, and the usual method of light massage can make the hard lumps disappear gradually. But the massage should be careful not to squeeze hard, but a slight gentle massage, once you can massage for about five minutes, a day can be massaged several times. If the hard lumps still exist after one month of injection by the above methods and there is no trend of reduction, you can inject hyaluronic acid special lysis enzyme, which can gradually dissolve the hyaluronic acid injected into the skin. However, you should be careful not to inject too much lysing enzyme, as it will make the hyaluronic acid lose the effect of injection.