I have been using this product for about six weeks and it has made an amazing difference in my skin. It has truly stopped/slowed the aging process on my face, neck, etc., the wrinkles on my face started getting much softer after 3 weeks of use and have continued to get better. I have been using it once a day in the evening and during the day I have been using Kate's tinted moisturizer with SPF 50 and my face has never looked better. My Mother was visiting last week and asked me if I had a "face lift", she had previously seen me in October. My face is clearly looking much younger and the only changes I have made to my skincare routine are Kate's products, they deliver, thanks Kate!