I have only good things to say about the day cream...it was non-greasy, absorbed quickly, and made my skin feel smooth and hydrated. I'm still using the sample that I got in my March Birchbox, and although I like the product, I can't say that I've seen a huge difference in my skin. (My caveat is that I'm lucky to have excellent, relatively wrinkle-free skin anyway, thanks to my mom's genes. I'm 43, but people usually think I'm 10-15 years younger than I am.)
So while I think this is a good product, I'm not likely to invest a lot of money in it. However, I did see that a small amount goes a long way, so this might be a worthwhile product if you're concerned about aging skin. The initial investment may be high, but the package should last a long time.