12 of the approx. 15 million tons of olives harvested annually come from Europe. Around 1 million tons of olive leaves and 30 million tons of olive waste are produced every year. Until now, olive tree leaves have not been used commercially but have been burned.
The use of olive tree leaves as a tanning agent is sustainable in two respects: cattle hides, a waste product of the food industry, are turned into leather using a natural raw material that is produced every year during the olive harvest.