I have been using this for about a week now and WOW my skin has never looked this good! After just ONE use I could see and feel my skin being more plump, smooth, soft, & glowy! I have pretty sensitive skin and this didnt irritate it at all. It also made my acne disappear to half the size overnight! The serum is lightweight and feels amazing in your skin. I wish it wasn't so expensive though, because I will not be able to repurchase it after my sample size runs out. It is amazing though. I received mine complimentary from Influenster to test!