Alchemists

Alchemists are responsible for selling magic mixtures. To open trade window - ask one of them about trade.
NPC name location
Agnes
Bersund, here
Al Humwich, here
Arthur Gulshan Village, here
Elsa Elsa's Watchtower, here
Geoffrey Caerfa, here
Liisa Karkkila, here
Nicholas Ellaria, here
Ziyad Ben Qarassih, here