I love this booster! At first I was a little worried because it came out quite oily on my skin, and I have really oily skin and didn't want to add anything to that, but it absorbs so quickly and doesn't feel oily at all. You can also see the effect quite quickly (although that may have been due to how dull my skin was when I started using it!) Either way, it really works for me, it's a great addition to my routine and I genuinely think it will last forever. I barely need to use any as it spreads so far so it looks like I've not been using it, even though I have for over a month. Don't skip this step, it really helps to bring life back to your skin!