What is the difference between using this in a bath versus a sauna?

The main difference lies in the method of dispersion and the intensity of the experience. For a bath, the oil should never be added directly to the water, as it will not mix and could concentrate on your skin, potentially causing irritation. Instead, first dilute 3 to 5 drops in a tablespoon of a dispersing agent like full-fat milk, honey, or a carrier oil, then stir this mixture into the running bathwater. This helps distribute the oil and creates a cooler, more aromatic atmosphere. In a sauna, the traditional method is to add 2 to 3 drops of the undiluted oil to a ladle of water, which is then poured over the hot stones. The steam will carry the brisk, minty aroma throughout the room, enhancing the sensory experience. In both cases, the effect is primarily aromatic and sensory, contributing to a feeling of refreshment.