So, which one is right for you? If you’re looking for brighter, firmer, and more even skin, it’s time to try out some of the best L-ascorbic acid serums. “L-ascorbic acid is the purest and most potent ...

According to our experts, the vitamin C type will also determine its effectiveness. Pure vitamin C, known as L ascorbic acid, ...

As someone with a fairly minimal skin-care routine, it’s difficult to convince me to add a new product or step. But vitamin C is one of those actually necessary ingredients. The antioxidant ...