OsiMagnesium Magnesium Bath Flakes comes from Zechstein magnesium. Magnesium can be easily absorbed transdermally (through the skin). To be used in a (foot) bath. Contains Zechstein magnesium Suitable for external use Magnesium plays a role in maintaining strong and flexible muscles 100% natural and vegan Contents: 200 or 1000 grams How to use? Add the magnesium flakes to warm water according to your own needs. Enjoy the (foot) bath for at least 20 minutes. 1 dose of 125 grams contains 15 grams of magnesium.