I have been dealing with dark under eye circles my whole life and I have tried EVERYTHING. Zax is easy to use and is very soothing to my eyes after a long day. However .. I have been using this product for 6 weeks+ now and I havent seen a major difference. My puffyness is gone .. and my eye lid area is brighter but that is about it . I will continue to use it as its part of my routine. Maybe withlonger use it will work better.