I've tried multiple vitamin C serums, but this one is by far my favorite. The smell is lovely and it goes on very light. My skin has been looking brighter and clearer since using this. I also love that the bottle is protected from light. I purchased another serum product where you could tell the product went bad as the smell changed. I researched later and learned that proper storage for vitamin C serum must be in bottles that block out the light, as that retains all the qualities of the minerals and vitamins in the product. I am purchasing this again for the second time now, highly recommend!