Toner performs many wonders for the skin: shrinks and tightens stubborn pores, hydrates skin and gives off a radiant glow. Per Spate’s popularity index, toner has been spreading across platforms, with a +2.5% increase in popularity compared to last year — a sign that consumers are increasingly adding this format into a well-rounded routine. Currently, the moment’s fastest-growing toners based on the New York City-based trend tracker’s popularity index are glycolic acid and rice toners. ...