if Restylane is injected properly, and an adequate amount is used, it can last 6-24 months under eyes. Most of my patients in Orange County have their Restylane injection under eyes about once a year.
There is not a set or recommended frequency for a volume correction. For most people Restylane will last 12 months or longer in the tear trough, but it depends on injection technique and your metabolism. If you find yourself feeling that your eyes are hollow looking, it might be time to discuss a volume treatment with your injector.The tear trough is a great area for rejuvenation, because a little volume can go a long way, but don't overlook the rest of the face. Making sure you address all the aspects of the face will give you the most natural and youthful result.Best Wishes!