My dark circles were really bothering me, so I went to get UltraCol treatment. They said one session would not be enough, and that I would need about 3 sessions for a total of 10cc to keep it for about a year, but the price per 1cc was 7.7, so it was more expensive than I expected.
For about a week after the injection, the front cheek area looked nicely filled in and the dark circles improved a lot, but it only lasted a week I had my second session, then got lazy and stopped going.. I am planning to look into another clinic or another treatment.