It is a treatment that helps to reduce genetic under-eye dark circles considerably (carboxy-therapy). A device called Dioxage is used. Contrary to many dermo-aesthetic applications, it is therapeutic, not a concealer. It is only suitable for patients whose under-eye dark circles are caused by genetics. The treatment is applied in 7 sessions on average. The intervals between sessions should be 1 week. Therefore, a 7-week period should be devoted to treatment. It is not recommended to interrupt treatment sessions or to put extra time between sessions for any reason. In case of interrupting the treatment or lenghtening the session intervals, the treatment period will be longer and the efficiency obtained from the treatment would decrease.