The use of incense in Japan began during the sixth century (the Asuka period) with the introduction of Buddhism, which uses incense during rituals and ceremonies. Agarwood was imported into Japan from China via Korea. From that moment on, incense has become an important aspect of Japanese culture.
Ash is, in my opinion, the most beneficial and versatile ofall the fill materials. Quality Ash and luxury Sand & stones offers many of the advantages of the other fill materials while overcoming many of their drawbacks. The level of ash in your censer will grow over time. The more incense you burn, the more ash you have! Although you can use quility safe ashi suggest Stones & Sand that is quite great to stay clean, easy dry & easy modern way.
Zukoh is a finely ground powder made from the same ingredients that fine incense is made of: cinnamon, cassia, clove, sandalwood, borneol, star anise, etc. Buddhist monks have used it for centuries for purification before ceremonies, preparing meals, or even touching another person. It has its origins in ancient India where hygiene and spreading germs was a major concern. It can be rubbed on any pulse point, behind your ears and/or used on your hands. It has a very natural fragrance. It can be rubbed between the palms for hand sanitation. Zukoh can also be burned as incense using Koh Do style. It can be burned on charcoal, makko, or used in incense formulas.