Formula: Hydragenum is an alchemy formula in The Witcher 3: Wild Hunt that is needed to craft hydragenum.
It can be possibly found at a random diagram location or purchased from the following merchants:
Formula: Hydragenum is an alchemy formula in The Witcher 3: Wild Hunt that is needed to craft hydragenum.
It can be possibly found at a random diagram location or purchased from the following merchants: