The RAW Hydrostone is made from uncharted natural terracotta clay that has been fired in a kiln. It was originally developed to keep tobacco fresh on sailing ships during long journeys across the sea.
Soak the Hydrostone in fresh water for 5 minutes then place it with your flower. It will keep your material fresh for a very long time and can even bring dried-out material back to life! The RAW Hydrostone is 100% reusable and 100% RAW.