I feel like ever since I started using this a while back, my skin has changed for the better. This bottle lasts for a month and a half to two months for me and has softened my skin as well as helped prevent acne. That being said, this is my specific and unique skin that this has worked for and it might not work for you. I tried products like differin, salicylic acid, other harsh face washes, and this serum is just wonderful. It's hydrating, pleasant smelling, and goes on easily underneath any loSee full review