I started using this product a few months ago when I started to notice the crow's-feet around my eyes. I knew that I had to start something, but I was hesitant, because I have tried products in the past that are too greasy and they just clogged the pores around my eyes. The first day that I went to put the product on, I could actually feel it firming up the skin! I have not had that problem at all with this product at all, and I really feel like my crow's-feet have disappeared!! The formulation of this product is also supposed to help with dark under eye circles, which was not the thing that I personally purchased it for, but it certainly is a great bonus, and I have noticed a difference there too! It dries on your skin really quickly, so it is really great to put it on in the morning and then go ahead and put your make-up on right over it! I have since bought the Kinerase Lotion, and I love that as well!