When he first arrived in Bangladesh, photographer Ernst Coppejans saw it everywhere: men who had dyed their hair or their facial hair orange.
Coppejans' portraits likely contain people "from all layers of the population" in Bangladesh, he said -- young and old, businessmen and tea sellers.
Many of the men dyed their hair orange for religious reasons. Others did it just for vanity.
Coppejans said most of the men he encountered were happy to pose for a portrait. But they didn't always choose to smile.