Sephora has become notorious for being an attraction for kids just as much as adult beauty lovers. The retailer, however, whose slogan is “We Belong to Something Beautiful,” is stocking its shelves with a new skincare brand created by teens for teens (with a little parental supervision). Sincerely Yours is designed to give developing skin the products it needs, and nothing more says the brand. The brand, co-founded by father-daughter creators, Jordan and Salish Matter, debuts with a collec...