Bicarbonate softens water to a silky feel and, over millennia, deposits the white travertine terraces of places like Pamukkale.
Bicarbonate (often with calcium, as calcium bicarbonate) is the mineral that gives thermal water a notably soft, smooth feel and, given enough time, builds landscapes. As bicarbonate-rich water cools at the surface it precipitates calcium carbonate, forming the dazzling white travertine terraces of Pamukkale in Turkey and the Cascate del Mulino at Saturnia. In bathing it is traditionally associated with softer skin and gentle circulation support.
How you'll know it
Soft, smooth "silky" water; builds the white travertine terraces of Pamukkale and Saturnia.
Traditionally good for
Associations from long use and emerging research — restorative, not medical claims.
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Softens the water and the feel of the skin
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Traditionally linked to circulation and gentle warming
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Builds the travertine terraces of Pamukkale and Saturnia
Springs rich in bicarbonate
Sources & further reading
For general interest, not medical advice. Benefit claims reflect long tradition and emerging research; the strength of evidence varies by mineral and condition.