I've had long-lasting samples of both of these recently and I definitely noticed a difference in my skin. I didn't use them together but consecutively, and both in the same way - after cleanser & before moisturiser morning & night. I'm thinking of splashing out on a full-size product, but which one? Do they do the same thing? Am leaning towards Visionnaire simply because it has a lovely smell. Any Lancome experts out there?