Oakmoss is found in many mountainous temperate forests throughout the Northern Hemisphere, including parts of France, Portugal, Spain, North America, and places in Central Europe.

Why is oakmoss banned?

In 2017, after years of ominous committee research and proposal drafting, the European Commission banned the use of three molecules in perfumery — two found in oakmoss, and a synthetic reminiscent of lily of the valley — based on concerns they could cause skin rashes in 1 to 3 percent of the E.U. population.

How can you tell oak moss?

Distinguishing characteristics: Oakmoss lichen can be distinguished from similar species by its branches, which are flat (vs. angular) and the color of its lower thallus surface, which is obviously paler than the upper surface.