Resin from tree bark
Resin naturally forms underneath the bark of some trees, that are therefore called resinous trees. Resin, that can be easily found when walking in the woods, is used to make paints, glues and detergents. To collect it, one piece of bark is removed and a container is placed underneath to collect what slowly drips into it, a drop at a time. Today, the collection of this product has decreased since it has been replaced with chemical products.