What are commonly used in balneotherapy body treatments?

Balneotherapy focuses on the therapeutic benefits of bathing, particularly in mineral-rich waters or with the use of substances that offer health benefits. Dead Sea salts are specifically well-known for their high mineral content, including magnesium, calcium, and potassium, which can help in improving skin hydration, enhancing circulation, and providing relief from certain skin conditions. The therapeutic properties of these salts, especially when dissolved in water, can enhance the overall experience and efficacy of body treatments associated with balneotherapy.

While essential oils, herbal infusions, and hot stones can certainly be features of various body treatments and can offer relaxation and stress relief, they do not specifically align with the primary focus of balneotherapy, which emphasizes the use of mineral-rich substances, like Dead Sea salts, for therapeutic outcomes. Thus, Dead Sea salts stand out as the correct answer in the context of balneotherapy.