Really impressed with the simplicity and effectiveness of this formula. It feels a bit thicker than most serums I've used, but that makes it easier to work with as it doesn't slide off my hands before I can get it to my face. Goes on smoothly and absorbs quickly. There's no sticky feeling after use. I follow this up with a squalane oil and the two pair together really nicely. Used day and night, I feel it has given my face a bit more plumpness and my skin is bouncier than before. Just looks very hydrated and happy!