But the crowded aisles of natural food markets are exactly where beauty buffs in search of high-end organic or synthetic-free products have been forced to forage. Sure, stores such as Barneys New York and Fred Segal Apothia have been adding to their stables of swanky, chemical-free beauty lines lately, but these brands are still in the minority at major beauty counters, sprinkled into a larger mix of conventional labels....