It is preferred by people who have thin or thick lip structure and who have the problem of decreasing lip thickness due to aging. It is a non-surgical procedure applied to people with thin lip structure by injecting a substance called calcium hydroxyapetite. Its permanence continues for about 7 years. In people with a thick lip structure, an elliptical piece of the lip mucosa is removed together with the fat tissues and then sutured. There is no scar after the operation.