This is a "super serum" that claims to take immediate effect on dark circles. They also had a phamphlet with before and after pictures to illustrate this "immediate effect". So I got suckered into it. After about 6 months and finishing a 15ml bottle, I see no difference to the dark circles under my eyes. Definitely not the immediate effect as the PR claims will take place. And this product isn't cheap. At S$99/US$58 the lack of results does not justify that sort of price. Will not buy again.