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 ...

Also known as ascorbic acid, vitamin C is a small carbohydrate molecule first identified in the 1920s by Albert von Szent Györgyi, who discovered that it was able to prevent and cure scurvy.

Of all the vitamin-C options, our experts generally recommend looking for serums that contain ascorbic acid, also known as L-ascorbic acid, which is the most active and purest form of vitamin C.

It’s also worth noting that the product description for The Ordinary’s glycolic acid even calls out a beauty hack where you can apply it as scalp care to clarify and reduce dryness.

Besides transforming my feet, The Ordinary’s glycolic acid toner has multiple uses throughout my skin and body care regimen. Since my skin has been feeling dull and dry in the winter ...