I used a sample that was given to me from the store and used it up within three weeks (which by the way is a very generous sample and they’re very good at that). I loved what it does to my skin so I’ve bought the big bottle and I’ve been using it most nights for about 3 months. My cheeks are super dry so I use more than recommended – I do two drops on each cheek and one drop for the rest of my face. My skin soaks it up and although it’s ever so slightly greasy and shiny, I don’t mind because it’s light and I’m sleeping through it. I have clear skin but my main concern is tight fine lines from dehydration because of my dry cheeks and this helps plump it up and give a really nice glow. Very much worth the spend and it’ll last a long time.