In Mexico, Myrrh refers to the bark of the Copal Blanco (Bursera bippinata), which is shed during the cuts made to extract copal resin. This bark, with small fragments of resin, is valued for its unique aroma and has traditionally been used in ceremonies to smoke and clean spaces, similar to copal resin.  

Like copal, it is placed over burning charcoal to release its natural fragrance, creating an atmosphere of purification and spiritual renewal.  

It is important to note that, unlike Commiphora myrrha (the myrrh mentioned in biblical texts), the myrrh marketed in Mexico comes from the bark of white copal tree.