https://en.wikipedia.org/wiki/Copal

Also called Breu Branco in Brazil, it is a resin the tree naturally exudes from its trunk as a mean to protect itself against parasites or scratches caused by animals. It is initially a shiny white substance with a rather mineral somewhat spicy scent that dries up and solidifies with time. The shamans from the Amazonian forest use it for religious ceremonies the same way incense is being used in churches, or they make a medicinal topical preparation by mixing in oil for skin cicatrization and respiratory diseases. Copal makes an excellent natural fixative in perfumes due to its natural stickiness.