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If you want bright, fresh, glowy skin but aren't using vitamin C yet, WYED? I'm confused, fr. "Vitamin C is a potent antioxidant that has evidence in improving skin brightness, skin tone, as well as stimulating collagen production to help reduce fine lines and wrinkles," dermatologist Karan Lal, MD, previously told Cosmo. Basically, it's like the gold standard for hyperpigmentation and acne scars to make your skin appear more even, plumper, and firmer. But there's one downside: Vitamin C serums can be a bit irritating, especially if you have sensitive skin. Although, Korean vitamin C serums are doing things a bit differently, offering up varying forms of the active ingredients along with a whole host of soothers to offset dryness.

We already know Korean skincare is a few notches above what we have in America. They're ahead of us in terms of what's trending in ingredients and innovations. So it's not shocking they'd have the leg up on vitamin C formulations. I've been testing them for months (nope, I won't stop talking about the Seoul trip I took this fall!! Sorry!!) and have found some pretty fantastic formulas:

Keep reading for all of my favorites, plus the need-to-know info from experts on how to use vitamin C.