I have been using the Facial Serum for about two weeks now, and am seeing a difference. I started using it because of dark spots along my jawline and lower cheeks. I've only been applying the serum to these areas. Since these have begun fading, I have realized I have a few spots under my eyes as well. I started applying under my eyes too and look forward to seeing these spots disappear!! I also really like the way the serum makes my skin feel -- smooth and silky.