I received two deluxe samples of this and it took me 2 months to go through them both so for lasting power this gets an A+. The only reason I didn't give it 5 stars is because, yes, it is good for fine lines, but after two months I only saw them mildly diminished. I have other products that have given me more noticeable results in the same or shorter amount of time. That being said, it was the most gentle fine line serum I've used. So yes, it works, and works well, but there are other stronger, better options out there.