Alchemy is an expensive and rare profession. These crafters will be found only in large cities, or in castles where they are kept busy researching and/or producing items for their employers.
A rumor has gone around for some years that no alchemist will admit to having the formula for Elixir of Youth, as apparently this brings them to the attention of powerful mages and royalty.
Luingroth used to have an alchemist, but he moved out, to places unknown. Port used to have an alchemist named Ulien, but she died under mysterious circumstances; rumor has it that she had the formula for the elixir of youth.