Effective cheek and lip implants have the advantage of coming from our own bodies. However, the quantity injected is not what ends up staying in place. In fact, fat injection is risky and, in general, many sessions (spread over a period of 3 to 6 months) are required to achieve the desired results and appearance. It is not recommended to over-correct an area that has been filled, as it may end up being overfilled for some time, making it difficult for the body to reabsorb the fat.