The second I walked into an Olive Young store in South Korea (well, one of about five locations I visited), I knew the beauty retailer was different. The sense of discovery and playfulness were unlike anything I’d experienced in a long time. Novelty aside, the aisles of innovative skin care , cute and colorful makeup , unique wellness items, hair care and even healthy snacks made me think, “Wow, this would do so well in the U.S.” I didn’t have to wait very long because Olive Young is opening its first brick-and-mortar store in the United States on May 29, right in my city of Los Angeles. Well, Pasadena, to be exact. (A second location is also set to open at the Westfield Century City mall in the next few weeks.) While the product assortment won’t be exactly the same, thanks in part to U.S. regulations on items like sunscreen , the unique sense of excitement and fun the retailer brings to IRL shopping is very present. Photo: Loamis Rodriguez/Olive Young The 27-year-old retailer had U.S.…