My girlfriend used to have dark circles under eyes a couple of weeks ago. She had tried various types of medications and lotions to get rid of the dirk circles and wrinkles. The products she used so far does not help her in any way until recently she bought Prototype#37-C. It is a very good product and has been clinically proven to reduce dark circles and wrinkles. After a couple of weeks of using it, I realized the changes in her appearances.