Dust

Heat Dust
Heat Dust is like a heater when infused in to weapons, armor, clothing, people and other objects, it makes the thing the Dust is infused in hotter the more aura the user uses on the Dust, the heat doesn't effect the user as much as other people touching the person or object.

Frost Dust
Frost Dust is like a Freezer when infused in to weapons, armor, clothing, people and other objects, it makes a object that the Dust is infused in colder the more aura the user uses on the Dust, the cold doesn't effect the user as much as other people touching the person or object.

Void Dust
Void Dust acts like an aura dampener it doesn't remove aura but aura is weaker against Void Dust.

Air Dust
Air Dust isn't really effective in combat unless you use it like River with her boots. Air Dust is mainly used for target practice to simulate live rounds, otherwise it practically useless.

Dragon Dust
Dragon Dust appeared a few years after The Great War and the Grimm Dragon was slain, its one of and possibly rarest types of Dust on Remnant, the Dust dosen't have a specific effect it actually seems to be impossible to use when used in its normal form it just seems to vanish without effect but when infused into a person it puts them in what seems to be like a alcohol and drug induced hase, when they come out of it they say it was like going trough there worst fears and experiences from there life in what felt like years to them when it was really only a few minutes in real time, otherwise it leaves no after effects makes you wonder why the Knights keep so much of it.