It's just that I've been using the products according to the advice on the enclosed leaflet, and I've been using them for a week now and can't see them lasting for 30 days let alone 60. I'm certainly very happy with the results and would like to continue using all of the products, but, despite the considerable saving of buying this collection compared to buying each item separately, I'm not at all sure I can afford to use these products continuously. At the moment (with the exception of the mask) I'd be surprised if they lasted one month, let alone two.