When Beyoncé wore a “Kale” sweatshirt in her 2014 “7/11″ music video, it was seen as a seminal moment for the leafy green’s cultural ascent. Once a decorative garnish, kale quickly made its way from health-food craze to cult beauty ingredient, attracting the interest of conglomerates like L’Oréal Group along the way.Now, another trend in…