For those unfamiliar with the term K-Beauty, it refers to skincare products and regimen rituals from South Korea. I realized K Beauty was becoming a “thing”—not just for trendy Millennials, but also for skincare-savvy Gen Xers and Boomers—when a friend of mine who's a successful, 40-something dermatologist, got remarried and went to Korea for her honeymoon. Instead of lingerie, she brought an empty suitcase, then went on a skincare shopping spree, stuffing it with sheet masks, night creams laced with snail mucin, and an assortment of ‘essences.’