The eye serum is effective. I have used many different eye serums and creams so I can tell that this is one of the best so far. The bottle however is not very good. It would be better if it came in a tube. Would struggle to get everything out at the end as the bottle and the pump are awkward to use. Still, the product is good. And price was not too expensive (they are all expensive anyway but compared to others, and for the quality, it's reasonable).
This serum comes in a stopper bottle so it is kept uncontaminated and one drop is sufficient to cover both eye areas. It is light, easily absorbed and has improved the skin in this vulnerable area. It is now one of the few products I would not wish to be without.
Up to now, I have tried at least 100 eye creams. When I reached my 30s, the lines under my eyes became visible and I became obsessed with finding the miracle eyecream. I have tried everything from La Mer and SKII to clarins and clinique. When I bought the NIOD CAIS, I decided to give this a go with the usual expectation that it's another eye product that will do nothing for me. I am so glad to say this is AMAZING. For the low price, this product has helped get the best out of my eye creams like never before. My lines appear reduced and it has lifted my drooping brow bones also in my opinion. I think this will be repurchased over and over and I rarely repurchase.