Phellem is the outermost layer of the tree bark, and this collection treatise on its incredibly fascinating biodiversity.

When bark is damaged a natural defense mechanism intervenes, a complex liquid substance hardens in contact with air creating a sort of conservative barrier keeping the vital wood layers away from bacteria, fungi and parasites. It’s the resin.

In a similar way, alcarol preserves the bark of different species covering them with an innovative bio-sourced transparent resin, functional declination of the tree’s natural process.