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Mineral

Silica

Silica is silicon dioxide, a compound of silicon and oxygen found in sand, quartz and plants such as horsetail. Supplements use it as a source of silicon.

Hair & SkinBone & Joint

Is silicon already in food?

Water, grains, and vegetables supply silicon; examples include oats, barley, potatoes, and spinach. These ordinary sources do not require a supplement. 1

Sources

  1. Schöne Haare durch Kieselerde? Verbraucherzentrale, 2026