New York Post Composite My dark circles started looking noticeably lighter within weeks of using this $12 vitamin C serum. I’ve tested more vitamin C serums than I could count over the years, and most of them fall into one of two categories: either they’re too irritating to use consistently or they’re so underwhelming that I forget about them after a month. That’s why I didn’t expect much when I first picked up the Good Molecules Vitamin C Serum . It was affordable, straightforward and didn’t come with the kind of dramatic promises a lot of skincare brands lean on. But after using it consistently, it quickly became one of the few products I recommend to practically everyone dealing with dark circles and dull skin. Good Molecules Vitamin C Serum Victoria McDonnell The biggest difference I noticed was under my eyes. I tend to get deep-looking discoloration that makes me look exhausted even when I’m fully rested, and concealer only does so much.…