Sunday Riley C.E.O. Rapid Flash Brightening Serum
The Sunday Riley C.E.O. Rapid Flash Brightening Serum ($130) is the first product that really got me hooked. I had tried many different vitamin C serums before and never felt anything actually worked until I tried this. My skin glows like crazy when I use this in the morning, and I've pried this open with my fingers to get every last drop. I'm hopelessly devoted.