You're likely already using a vitamin C in your routine, but do you know what it's actually doing to your skin? And why you should be using it, other than to brighten your complexion? We're taking a deep dive into the buzzy skincare ingredient and chatting about vitamin C's many benefits (it can do more than just brighten!), what you should be looking for when finding a product that actually works, and other important tips (like how you should store it).