The purest magnesium on Earth - for calm, clarity, recovery and better sleep
At The Salt Box, we stock only Zechstein magnesium chloride – the most pristine and concentrated form of magnesium in the world.
Sourced from the ancient Zechstein Sea, 1600 metres underground in the Netherlands, this magnesium chloride has been untouched for over 250 million years. Naturally preserved and lab-tested for purity, it contains no contaminants, heavy metals or fillers – just the good stuff your body needs.
Magnesium is vital for over 300 functions in the body – but most of us aren’t getting enough. Zechstein offers a powerful, natural way to restore your levels and feel better every day.
Why Choose Zechstein Magnesium?
💧 Unmatched purity
Extracted from a prehistoric seabed, Zechstein magnesium is never exposed to modern pollution, unlike surface-level sources like the Dead Sea.
🧬 Naturally concentrated
Zechstein magnesium chloride is a 31% brine solution in its natural state – no refining, no chemical processing.
⚡ Highly bioavailable
Transdermal (topical) application allows fast, direct absorption into the bloodstream – bypassing digestion entirely.
🛡️ 100% clean and tested
Every batch undergoes rigorous testing at the source for purity, quality and origin certification. It’s trusted worldwide by health professionals and wellness brands.
🌿 Ethically sourced
Responsibly extracted from the Netherlands with minimal environmental impact – and always cruelty-free and vegan.
What It Helps With
- Muscle cramps, fatigue and recovery
- Poor sleep, stress and low mood
- Skin conditions like eczema and psoriasis
- Headaches, tension and nerve health
- Growing pains, pregnancy and hormone balance
- Low magnesium levels due to diet or stress
How to Use Zechstein Magnesium
🛁 Magnesium Flakes
Add 2–3 cups to a warm bath and soak for 20–30 minutes. For a foot soak, use ½–1 cup. Repeat 3–5 times per week.
💧 Magnesium Oil Spray
Apply 5–10 sprays daily to the stomach, feet, shoulders or any sore area. Rub in and leave for at least 10 minutes.
🧴 Gels & Scrubs
Massage into tight or fatigued muscles pre- or post-exercise. Rinse off if needed after 10+ minutes.
Explore the Range
We offer Magnesium Flakes, Spray, Oil, Gel and Scrub – all made using authentic Zechstein magnesium chloride. Whether you need relief, recovery, or relaxation, there’s a format that fits your routine.
Bulk and retail sizes available. Trusted by naturopaths, wellness clinics, athletes and everyday Australians.