More than a decade after she hit it big on Instagram, Amber Fillerup Clark’s hair care line tops the sales charts at Sephora. And like many first-wave influencers who’ve become business owners, Clark is reinvesting in the creator economy. By the time Amber Fillerup Clark landed a major profile in The Atlantic in 2017, the blogger and Instagrammer had already spent seven years at the top of her game.