There is a possibility that some people may experience swelling in the lip area after undergoing lip filler treatment. Similarly, the amount of swelling can also be affected by the amount of lip filler used, in addition to the amount of filler used. The swelling of the lips caused by the lip injections is a completely normal side effect, which usually shows up after two days of the procedure, then gradually diminishes and returns to normal after two weeks. Patients can apply ice to the lips when they suffer from swelling by using an ice pack or an ice cube that has been covered with cloth. In addition, this will help ease any swelling, itching, bruising or pain that may occur as a result of the treatment.