YonKa products are formulated, produced and marketed by Laboratoires MULTALER, a French company located in the Paris region. Managed today by Françoise and Catherine Mühlethaler, the Laboratories were founded in the 1950s by their parents, passionated botanists and pioneers in the fields of esthetic aromatherapy and phytotherapy. With that same passion, and remaining faithful to the same values, Françoise and Catherine have developed the family business on all levels.
