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.
FAQs
Why choose Zechstein magnesium?
Zechstein magnesium comes from an ancient underground mineral deposit in Northern Europe that has remained protected from modern environmental pollution. Its identifiable source, high purity and minimal processing make it a premium choice for topical magnesium products such as bath flakes and magnesium oil. For The Salt Box, that traceable origin is a key part of what distinguishes Zechstein magnesium from more generic magnesium chloride products.
What is the difference between magnesium flakes and magnesium oil?
Both are based on magnesium chloride, but they are used differently. Magnesium flakes are designed to dissolve in a warm bath or foot soak, while magnesium oil is a concentrated magnesium chloride solution that can be applied directly to the skin. The best option depends on whether you prefer a full bathing ritual, a quick foot soak or a simple topical application.
How do I use magnesium flakes?
Dissolve the recommended amount in warm bathwater or a foot soak and allow the flakes to dissolve before soaking. They are particularly popular as part of an evening wind-down or post-exercise routine. Always follow the directions on the packaging, as recommended quantities can vary between products.
What is magnesium oil and why is it called an oil?
Magnesium oil is a concentrated solution of magnesium chloride and water. It doesn’t actually contain oil; the name comes from the smooth, slightly slippery feel of the solution on the skin. It can be used as part of a regular body-care, relaxation or recovery routine and is a convenient option when you don’t have time for a bath.
Why does the source of magnesium matter?
The source can help tell you how a magnesium product was formed, where it comes from and how traceable its quality is. Magnesium sourced from a recognised natural deposit gives customers more confidence than a product with little information about origin.
The Salt Box’s hero magnesium range uses Zechstein magnesium from the ancient Northern European deposit, reflecting the brand’s wider focus on purity, provenance and transparent sourcing.