What are Resins?

A jar of benzoin resin and a bowl of frankincense tears (also known as frankincense resin). The benzoin, even when in a jar that is tipped over, is so thick and sticky that it doesn't spill out.  

When some plants, namely trees, are injured, they produce a thick, sometimes solid, sticky substance called a resin. Benzoin (Styrax benzoin) is an example of a resin. In commercial production, the trees will be cut in many spots to encourage the tree to produce its resin.

Natural resins provide therapeutic benefit, but some are hard to work with in aromatherapy because they are extremely thick and sticky. You will find liquid resins that have been extracted by solvent or alcohol extraction.