I've been using this product consistently for at least 5 years. It is my go-to foundation primer as it layers perfectly under makeup or tinted moisturizer. It adds a sort of blurred look to the skin, so pores appear smaller and your skin tone will look more even. It's even nice to wear on its own as it just makes your skin look better. The retinol in it is a bonus as it does help to refine pore size when used consistently. Do not expect the pore refining results overnight, but if you use this daily for a month or so you will find yourself surprised to look in the mirror one day and notice that your skin just looks smoother and more even toned. I stopped using this once for a couple months because I thought I'd try a different foundation primer by another brand, and I really ended up noticing that my skin looked less smooth and clear after a time. I immediately bought this one again, and I will never be without it from now on. I use it every morning in place of a moisturizer under my makeup. It is a staple for me, and I hope Paula will carry this product unchanged forever!