"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Of course, not all vitamin C serums are created equal, and some of the most sophisticated and efficacious ...

Along with retinol and hyaluronic acid, one of the skincare ingredients you likely hear about most is vitamin C. And with good reason: It’s a serious skincare multitasker that not only helps protect ...

Vit C-packed formulas are everywhere, but with choices ranging from serums and drops to capsules and sprays, how do you find a formula that works for you? With our guide to decoding the products and ...