From the Research
Magnesium sulfate float therapy has been shown to have a significant impact on reducing stress, anxiety, and pain, while improving sleep quality, as demonstrated in a 2021 randomized clinical trial 1. The therapy involves floating in a sensory deprivation tank filled with water containing high concentrations of Epsom salt (magnesium sulfate), typically using 800-1200 pounds of salt per tank. This creates a solution dense enough to allow effortless floating, simulating weightlessness. A typical session lasts 60-90 minutes in a light-proof, sound-insulated tank maintained at skin temperature (around 93-95°F). Some key points to consider when using magnesium sulfate float therapy include:
- Physically, the magnesium absorption through the skin may help relax muscles and reduce inflammation, though scientific evidence for significant transdermal absorption remains limited 2.
- Psychologically, the sensory deprivation environment promotes deep relaxation by removing external stimuli, potentially triggering a parasympathetic nervous system response.
- For best results, avoid caffeine before sessions, shower beforehand, and consider using earplugs and neck supports if needed.
- While generally safe, those with open wounds, epilepsy, or certain psychiatric conditions should consult healthcare providers before trying float therapy. It's also worth noting that the evidence for the effectiveness of magnesium sulfate float therapy is not entirely conclusive, with some studies showing mixed results 3, 4. However, the most recent and highest-quality study 1 suggests that the therapy can be beneficial for reducing stress, anxiety, and pain, and improving sleep quality.