The Kneipp Free Airway Bath Crystal is made from natural thermal salt and contains valuable eucalyptus essential oil. The pure thermal salt of the Kneipp bath crystals is obtained from the natural salt stock of Saline Luisenhall, which is unique in Europe, following centuries-old traditions. The salt crystals are coated with valuable aromatic oils. Thermal salt does not contain chemical or environmental pollutants. Dermatologically tested, pH skin neutral, does not contain preservatives or alkaline soap. Aroma effect: eucalyptus oil warms the body and clears the airways.