Great product (serum). I tried lots of facial serum and nothing help my skin. It always break me out. But this is the first time that I don't get breakout. I am using it for 4 days now and I can say that this is really good. My face love it. It brightened my dark spot which is great. All in all. I was very satisfied. I got this at discounted price in exchange of my honest and unbiased opinion.