In Anna Riva's words:
HISTORY AND USE
Originally incense was made from sweet-scented woods, odorous resins, and other natural substances which were burned to produce fragrant fumes. One can still make their own incense if they wish to invest the time and energy necessary to obtain the ingredients and mill them into a burnable form. If incense from pungent woods, pods, gums, and resins is used, it is most likely not "self-lighting" and must be placed on a bed of charcoal. There is a specially treated charcoal which ignites instantly when touched with a match flame, and thus ignites the incense when enough heat has been generated.
Each form of incense - cones, sticks, and powdered - is just as effective as the other, though the powdered type is by far the most popular kind. Its popularity is based on the fact that two or three kinds can be easily mixed together when several elements are needed for a special purpose.
ALL PURPOSE INCENSE PRAYER
For those who wish to bless the incense or dedicate it to a special purpose before beginning the ritual, this general prayer will serve.
"O Blessed One, accept this ceremony with the spirit in which it is performed; with sincerity, with humility, and with the realization of mighty mystical forces far beyond my own understanding."