Fer à Cheval is one of the founders of the UPSM (Union des Professionnels du Savon de Marseille), literally Union of Marseille Soap Professionals, which strives for the certification of authentic Marseille soap.
This logo guarantees a soap made:
• exclusively from plant-based oils, without chemical additives, preservatives, or fragrance
• in cauldrons according to the ancestral, 5-step, Marseille process
• in Marseille.