Twenty years ago, argan oil was sold by the side of road in Morocco for about $3 a gallon.
International sales were virtually nonexistent.
These days, argan oil can cost as much as $300 per liter, making it the world's most expensive edible oil.
That's because the formation of women-run cooperatives has transformed the production into a billion-dollar industry.
Argan oil is predominantly used in high-end cosmetic products and Moroccan cuisine.