Some time ago, Cult Beauty sent me an e-mail about this product. I suffer from dark circles since I was a child and been looking for a product that could - at least partially- solve my problem for years. Being also a vitamin c fan, I decided to give it a try although it was a bit expensive. Best purchase EVER. It almost erased my dark circles, I can now go out without wearing a concealer. It truly solved the impossible. Will certainly repurchase - for the rest of my life.