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I own at least 10 skin care products. Of those, I use four regularly, and one or two I apply occasionally. And the others? Honestly, they're just gathering dust. Today, many of us have a veritable beauty counter in our bathrooms. It's easy to feel that if you don't use the right serums, acids, creams and masks, you're doomed to wrinkled, splotchy and prematurely aged skin. Do we really need all this stuff to achieve healthy, attractive skin? That's the topic of Life Kit's Guide to Skin Care . …