Structurally, it is applied to people with small lip volume or with asymmetries. Hyaluronic acid fillers are used. It is applied after numbing with topical anesthetic cream. Minimal bruising and edema may occur. It takes 5 minutes. The final shape is seen 2-3 days later. Although its permanence varies from person to person, it is on average 8-12 months. Repeatable.