I received as a sample, and the sample lasted two months. It decreased the appearance of a dark spot on my forehead without peeling. I had been previously using AHAs for that and when the sample ran out, I went back to AHAs, and my skin started peeling. I'm back to purchase a full size. It reduced the appearance of fine lines and made my skin feel less taut. It is pricey, but doing a cost analysis, it lasts a long time, so you just need to save up for it.