Artemis Patrick knows all about Sephora tweens, not only as the president and CEO of the brand’s North America business, but also as a mom to a 13-year-old. “She asks all the right questions,” she says. “She’ll come to me asking for sunscreen or a good cleanser. She doesn’t come asking me for retinol. She knows better.” Patrick says her daughter is “extremely knowledgeable” about beauty, adding, “I hope I have something...