Well, this dust is simply leaves grounded and pulverized into a very fine powder. Nothing more, nothing less. It’s a natural by-product of the processing of yerba. The leaves, the stems, the dust – it all comes from the same plant. It just takes a different form and appearance.
Powder is ok, is good and is part of this plant.
  • Mate dust contributes to the flavor of the mate.
  • This dust is the component that gives the body of the mate.
  •       Dust makes preparing the mate easier and more aesthetically pleasing as it plays a rol as "sticker" so it helps to the consistency of this drink when prepared.
  • Even though the caffeine is concentrated in the leaf, the major part of the antioxidants are concentrated in the whole plant.
So, there is no harm but only good things in finding dust in your Yerba Mate.