These Top-Rated Vitamin-C Serums Will Have You Looking on the Bright Side of Dull Skin

In some situations, the saying "less is more" is true, but that's not the case when it comes to this serum treatment. Not only does the Glow Recipe Guava Vitamin C Dark Spot Treatment Serum ($45) have a 4.6 approval rating from Sephora shoppers (and a rave review from one of our editors), it's got five forms of vitamin C inside. Since that's in the form of an encapsulated time-release ingredient, it helps minimize irritation despite that power.