The results with the collagen lip injections may also be less the permanent by improving the specifications of the lips of a patient. This procedure may last from four up to six months using touch-up treatments two times or three times a year. In this lip augmentation, the doctor can improve the size of a persons’ lower or upper lip and even both. It is used to correct specific areas on the lip with the use of lip injections. Several methods that have bovine collagen with it can lead to some allergic reaction. The patient may be needed to be analyzed and be examined by a doctor to prevent problems and allergic reactions before the surgery. Based on which lip one wishes to augment, whether the upper or the lower lip, a person could obtain instant modification in less time. collagen lip injections cost is not incredibly high but does cost a reasonable amount.