There are more than 2,000 reviews and 73,000 loves for this oil-free Caudalie Vinoperfect Anti Dark-Spot Serum ($79) that fights hyperpigmentation, acne scars, and other dark spots. While this serum doesn't technically include vitamin C, it's still a glow-inducing heavy lifter thanks to grape vine sap, which is 62 times more effective at brightening than the trusty vitamin.