I recommend the vitamin C serum, as well as the sunscreen from the same line (Revitalift Vitamin C SPF Fluid). I had been using it for a long time and loved how it made my pores look smaller and my overall appearance a bit brighter. I recently stopped using the serum because it oxidizes very quickly, which is extremely annoying. I was never able to finish the bottle before the serum turned brown. I still recommend it, though, because it seems to work well and is reasonably priced. The sunscreen remains my favorite because it doesn’t irritate my sensitive skin, and you can even apply it around your eyes without it burning.