This powder helps make water cleaner, sticking to dirt and separating ... and still requires further filtering to be safe to drink. A self-contained tank is also available for use in emergencies ...
It all starts with creating the powder, a process that dates back to 12th-century Japan. (The overall technique of drying, pulverizing, and then mixing whole tea leaves into water to drink dates ...
More technically speaking, as Yawitz says, psyllium husk powder is a supplement derived from the Plantago ovata (psyllium) plant. “It's made by milling or grinding the outer covering of psyllium plant ...