I've been using this product for more than a year and I love it. It "sinks" in quickly because it's watery but I think it makes more of an impact than anything else I use. I follow up with a moisturizer which feels good but it's the serum doing the real work. I'll be turning 60 in a few months and I've never lied about my age -- even to my students! No matter how many times I tell them, they always insist I'm 35. Dr. Denese's advice and products have definitely helped me maintain a more youthful skin. Thank you Dr. Denese!