Our Formula

Our bath tonics have been designed and developed to maximise the transdermal (a.k.a. through the skin) absorption of natural magnesium while bathing.

Our minerals are concentrated in a liquid form, allowing us to include ingredients that help facilitate skin health, moisture retention and hydration. Our bath tonics can be used by all skin types and ages.

Our approach couples the scientifically proven therapeutic benefits of mineral bathing with a positive mind and body message. Our formulations only use natural ingredients, are vegan friendly, paraben free and not tested on animals.

Our brand promotes bathing as an opportunity for everybody to reclaim their personal space and to consciously take the time to care for your mind and body. Shut the door, turn off your smartphone, slip into mineral-rich 39°C water and disconnect from the stresses of life.


Our Ingredients

Natural Magnesium Chloride

The natural magnesium chloride used in 39 Degrees products is sustainably sourced from an underground seabed beneath Northern Europe, referred to as the Ancient Zechstein Sea. It is globally the most purest source of naturally occurring magnesium chloride in existence.


  • Supports relaxation & sleep
  • Relieves nervous tension
  • Relieves muscle cramps & spasms
  • Helps relieve headaches
  • Assists energy production


The glycerol in 39 Degrees products is completely natural and vegan friendly.

Glycerol is important to the cosmetics industry for different reasons. In a similar way to honey, this clear, viscous liquid absorbs free water into its structure, creating an inhospitable environment for microbes and making it an ideal substitute for water in products. Glycerol also has softening, hydrating properties on the body and the ability to carry ingredients onto the skin where their benefits can be utilised.

Helianthus annuus oil

Helianthus Annuus oil is extracted from the seeds of the sunflowers and sunflower oil is a clear, slightly amber-colored liquid. With high amounts of Vitamins A, B, D, E and Beta-carotene, it helps improve your skin’s moisture retention capacity for healthy skin. It is particularly beneficial for individuals with dehydrated or sensitive skin.

Cocamidopropyl betaine

Naturally derived from the fatty acids of coconut oil, cocamidopropyl betaine is a very mild and versatile compound. As a surfactant, it gently washes the skin. It's also a good thickener and emulsifier, helping water & oil to mix.  The cocamidopropyl betaine in 39 Degrees products is completely natural, palm-free and vegan friendly.

Pure essential oils

39 Degrees essential oils are 100% pure and natural. Essential oils are aromatic compounds found in seeds, bark, stems, roots, flowers and other parts of plants. They are beautiful, powerful and fragrant. Our liquid magnesium bath tonics come in four different essential oil aromatherapy blends to relax, replenish and rejuvenate. Read more about our aromatherapy blends here.