Resin

 Resin. 
Absolutely the oldest kind of incense and in exactly the same form as used by the three wise men two thousand years ago.  
In fact, the use of tree resin as an aromatic substance can be traced back much further - over six thousand years.
You can literally recreate ancient aromatic history in your own homes.

The smoky fragrance produced by burning resin on charcoal disks is quite unique and amazingly evocative. 
 Burn only with charcoal disks or metal resin burners.
Do not ingest.