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OSI Magnesium Bath Flakes 1kg

£8.99

OSI Magnesium Bath Flakes are pure magnesium chloride crystals from the ancient Zechstein seabed in the Netherlands, one of the cleanest natural sources of magnesium salts in the world. Each 1kg pack dissolves into warm water to create a mineral-rich bath or foot soak.

Used by people winding down at the end of the day, easing tired muscles after exercise, or simply enjoying a quiet bath ritual. A measured amount added to warm water produces a clean, lightly mineralised soak with no fragrance or additives.

Designed for:

  • Adults who use bath soaks to unwind or ease tired muscles

  • People who prefer a fragrance-free, additive-free bath product

  • Those who want a pure mineral soak rather than scented bath salts

For a foot bath, add 150-200g (around one cup) of flakes to warm water and soak for 20 minutes. For a full bath, add 250-300g (around two cups). 2 to 3 baths per week works well for most people.

Suitable for vegetarians. Hypoallergenic and free from the 14 major declared allergens.

A note from our pharmacy team:

Magnesium baths are a popular part of a wind-down routine, and many people find them genuinely soothing. The science on how much magnesium is actually absorbed through skin during a bath is more debated than some marketing suggests, so think of these flakes as a relaxing mineral soak rather than a primary way to raise your magnesium levels. If your aim is specifically to top up magnesium intake, we can talk you through oral options too. Pop in and ask.

Book a Supplement Consultation

OSI Magnesium Bath Flakes are pure magnesium chloride crystals from the ancient Zechstein seabed in the Netherlands, one of the cleanest natural sources of magnesium salts in the world. Each 1kg pack dissolves into warm water to create a mineral-rich bath or foot soak.

Used by people winding down at the end of the day, easing tired muscles after exercise, or simply enjoying a quiet bath ritual. A measured amount added to warm water produces a clean, lightly mineralised soak with no fragrance or additives.

Designed for:

  • Adults who use bath soaks to unwind or ease tired muscles

  • People who prefer a fragrance-free, additive-free bath product

  • Those who want a pure mineral soak rather than scented bath salts

For a foot bath, add 150-200g (around one cup) of flakes to warm water and soak for 20 minutes. For a full bath, add 250-300g (around two cups). 2 to 3 baths per week works well for most people.

Suitable for vegetarians. Hypoallergenic and free from the 14 major declared allergens.

A note from our pharmacy team:

Magnesium baths are a popular part of a wind-down routine, and many people find them genuinely soothing. The science on how much magnesium is actually absorbed through skin during a bath is more debated than some marketing suggests, so think of these flakes as a relaxing mineral soak rather than a primary way to raise your magnesium levels. If your aim is specifically to top up magnesium intake, we can talk you through oral options too. Pop in and ask.

Book a Supplement Consultation

Product Details

  • For a foot bath: add 150-200g of flakes (around one cup) to warm, not hot, water and soak for 20 minutes or longer.

    For a bath soak: add 250-300g (around two cups) to a warm bath and relax for 20 minutes or longer.

    2 to 3 magnesium baths per week is a typical pattern.

    Each 1kg pack contains roughly 3-6 full baths or 5-7 foot baths depending on quantity used.

  • Aqua, Magnesium Chloride, Magnesium Sulfate, Potassium Chloride, Sodium Chloride, Calcium Chloride.

    Suitable for vegetarians. Hypoallergenic, free from the 14 major declared allergens.

  • Magnesium chloride dissolved in warm water creates a mineral-rich soak. Warm water on its own helps muscles relax and supports the wind-down before sleep, and many people find a magnesium bath a more enjoyable and meaningful version of that ritual than plain water.

    The Zechstein source is one of the cleanest natural deposits of magnesium chloride in the world, sealed underground for around 250 million years and free from modern environmental contaminants.

  • For adult use only (18+).

    Contains nicotine in 3mg, 9mg and 18mg variants. Nicotine is an addictive substance. The 0mg variant contains no nicotine.

    Not suitable for non-smokers, non-vapers, pregnant or breastfeeding women, or those with heart, blood pressure or respiratory conditions.

    Keep out of reach of children.

    Store in a cool, dry place out of direct sunlight.