I received a sample of this product and finally got around to using it. My skin is typically extremely dry, occasional hormonal acne and I have under-eye wrinkles starting to form thanks to all those all-nighters I pulled in college. I gave this product a try and first off, it super burned in a pretty random patch on my cheek, but was just fine everywhere else. Once it dried a short while later, I applied my daily makeup and went on about my day. Later that night when I washed my face, I used the product again (and again it burned intensely in that one small patch), and went on to bed. The next morning my face felt glorious! It was smooth, my skin felt much clearer, and the lines under my eyes weren't so prominent. I think I'm probably going to continue using this in my nighttime routine, but I'm curious to see how this fares over the course of the sample's lifespan. Aside from the small fire it lights on my cheek, I'm enjoying this product very much.