While I typically love the way vitamin C makes my skin look I don't use it very often because of the stickiness and how long it takes to absorb into my skin. This product absorbs very quickly and has almost no stickiness at all and if you use it before your moisturizer it seems to allow it to absorb almost immediately. After using it for only a few days I developed noticeably brighter skin and it seems to have evened out the pigmentation of my skin. While I wrote this review for a contest on Influenster I did buy this product after sampling it. I have been using Dermalogica products since I was 20 years old I am currently 40 and everyone says that I do not look my age at all and I must admit that it is at least in part due to the products I use on my face.