In this articleULTAWMTCarly Xie looks over facial mask items at the Face Shop, which specializes in Korean cosmetics, in San Francisco, April 15, 2015.Avila Gonzalez | San Francisco Chronicle | Hearst Newspapers | Getty ImagesOn a recent Saturday at an Ulta Beauty store in midtown Manhattan, Denise McCarthy, a mother in her 40s, stood in front of a wall of tiny pastel bottles, tubes and compacts. Her phone buzzed — another TikTok from her 15-year-old daughter."My kids text me the TikToks," she told CNBC, sc ...