I have this in the "Extreme" version which costs a small fortune for a 1-oz. bottle (over $55). This serum plumps and holds water/moisture and feels super-fabulous going onto a moist face after washing. Then over that you should apply your choice of a moisturizer. The product is oil-free which I need & love. I read elsewhere that there is hyaluronic acid in it which helps boost collagen or something - but I'm not sure I can't find the insert in the box. If you are looking for a plumper appearance and hydration without oil, then this is your product. I can't say if it will actually change things over time, but I think most of these topicals have to be used all the time to continue to see benefits of hydration.
