I am an Estée Lauder beauty adviser and will be glad to help! Advanced Night Repair has hylronic acid in it, which is essential for binding moisture! This technology will cause the serum to soak into your skin rather than feel like a layer. Go to your nearest Estée Lauder counter and ask a beauty adviser to show you the water test! This will give you a visual of the product so you can see the benefits! I hope this helps.