Magnesium Flakes
Zechstein Bundle

Original Zechsal magnesium flakes from the ancient Zechstein Sea in the Netherlands. Ideal for full body and foot baths. Natural magnesium with 47% magnesium chloride hexahydrate. No additives, laboratory tested. 5x1kg
  • 100% original Zechstein
  • Magnesium oil heated to 165°C and converted into its solid form: magnesium chloride hexahydrate
  • 47% magensium chloride hexahydrate, from the underground Zechstein primordial sea
  • Natural filling without chemical purification
  • Transdermal: targeted application via the skin
  • Suitable for use in foot and full body baths
  • 1kg Zechstein magnesium flakes per jar
  • Minimum shelf life of 36 months after opening
Customize Magnesium Flakes <br/>Zechstein Bundle <br/> <span class="protect-case">5kg</span>
5 x Magnesium Flakes Zechstein Magnesium Chloride Hexahydrate   + €0.00

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€44.70 €49.50


Delivery : 1–3 business days

Incl. VAT, excl. Shipping

€8.94 / 1kg

Premium Bioactive Ingredients

  • 100% original Zechstein magnesium chloride from the 250 million year-old underground Zechstein primordial sea
  • Natural, ionic magnesium chloride obtained via deep drilling at depths of up to 2,000m; pure, natural product
  • Magnesium oil heated to 165°C and converted into its solid form: magnesium chloride hexahydrate
  • Ultra-pure and natural
  • Natural filling without chemical purification
  • 47% magnesium chloride hexahydrate in flake form

How are we different?

The former area of the Zechstein Sea in the Netherlands is home to the world's purest and highest quality natural source of magnesium chloride. This natural blend of magnesium chloride deposits and other trace elements contributes to the high bioavailability and tolerability of Zechsal magnesium oil.

The Zechstein mine is located above a mineral-rich brine deposit that stretches from Northern England to the Netherlands, across Germany and to Russia. In the sea, which dried up 250 million years ago, the various layers of brine were deposited on top of each other in certain regions. Today, a significant layer of magnesium chloride is located below the Netherlands at a depth of roughly 1,600 to 2,000m, far from any form of environmental pollution. The 31% saturated magnesium oil has been extracted by deep drilling and water extraction methods since 1982.

Zechstein magnesium oil, which is obtained directly from the soil, can be used immediately without chemical purification on account of its exceptional quality—a major advantage over magnesium chloride obtained through salt water evaporation. Regular laboratory tests guarantee the high quality of each batch.

For the production of magnesium flakes, magnesium oil is heated to 165°C and converted to solid magnesium chloride hexahydrate. Magnesium flakes are one of the transdermal products with the highest magnesium concentrations with approximately 47% magnesium chloride bound to crystal water and 120mg pure magnesium per gram.


Zechsal Magnesium Flakes

Zechsal Magnesium Flakes contain water and 47% magnesium chloride. Magnesium chloride is strongly hygroscopic, meaning it binds the moisture in the environment to its lattice structure. Zechsal Magnesium Flakes have the highest magnesium concentration of all cosmetic forms; 1g contains 120mg of pure magnesium. Thanks to their high concentration, the flakes are ideal for preparing 1-5% concentrated magnesium chloride foot or full body baths.

Magnesium Chloride

Magnesium chloride takes fully ionic forms when dissolved in water, making it highly bioavailable. In human cells, approximately 10% of magnesium is in an ionic form, whereas the rest is bound to other tissue structures and enzymes, one of which is the ATP molecule ("fuel molecule"), which is able to produce energy only when magnesium ions are present. Below an intracellular concentration of 10mmol ionic magnesium, there is no basis for the formation of stable and properly folded proteins.

Magnesium ions enter the body in different ways depending on the compound and the type of administration (oral, transdermal, or intravenous). In the case of transdermal application, magnesium ions are applied locally and contact with the gastrointestinal tract is avoided. Transdermal application is also associated with benefits for the skin.

Transdermal Magnesium

As a natural cosmetic, transdermal magnesium offers a reliable and effective method for applying magnesium to the skin. It has a range of beneficial properties, including:

  • No risk of gastrointestinal irritation 
  • Suitability for the elderly
  • No laxative effect on the skin even at high doses
  • Ideal for point massage after sport, also for muscle cramps
  • Suitability for pregnant and breastfeeding women
  • The ability to target specific areas for massage and skin care (muscle cramps, ageing spots, joints, etc.).

It is believed that the perspiratory glands play a key role in the absorption of magnesium through the skin and into the blood. The cells responsible for the reabsorption of magnesium while sweating are particularly important, as they prevent magnesium loss. Increased absorption through palms, soles, armpits, forehead, and the inner side of the elbows is to be expected, because the perspiratory glands in these areas have a particularly high density (120-370 per cm²).



In cases of severe magnesium deficiency, 1 foot bath per day or 2 full body baths per week for a minimum of 6 weeks are recommended.

For a general sense of well-being, 1 foot bath per week or 1 full body bath per month is recommended.


Cosmetic product for external use only. May cause a slight tingling sensation on sensitive skin. Avoid contact with open wounds and the eyes. Keep out of reach of children.


Ingredients: Aqua (Water), Magnesium Chloride (47%).

How much elemental magnesium is contained in Zechsal magnesium flakes?

1kg of Zechsal magnesium flakes contains 470g of magnesium chloride. This corresponds to a 25.6% pure elemental magnesium content. 1kg of Zechsal magnesium flakes thus provide 470g x 25.6% = 120g of pure magnesium. 1g Zechsal magnesium flakes contains 120mg of pure magnesium.

1g of original Zechsal magnesium flakes contains 120mg magnesium (32% of the Nutritional Reference Value (NRV) of the EU) as well as 350mg chloride (43.8% of the NRV of the EU).

Product Details

Origin Zechstein Sea, Veendam, Netherlands
Application Product should be used within 36 months of opening

Sunday Natural

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For thousands of years, cultures all over the world have been using medicinal plants and nutritious foods to naturally foster and maintain vitality and good health.

With our products, we try to emulate this ancient wisdom as much as possible.

Consequently, our philosophy is simple: everything we do meets the highest standards of quality and purity; our focus is on organic and natural ingredients.

We follow this philosophy with meticulous care on all levels and down to every last detail.

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