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Bicarbonate hot springs

3250 bicarbonate-water places mapped worldwide. Find where to soak — and where to stay nearby.

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What is bicarbonate water?

The Bicarbonate ion (HCO₃⁻) is the main buffer system of blood plasma. In a bath, it acts as a gentle emollient and leaves a smoothed-skin sensation.

Known as "Beauty Water" for its ability to saponify surface fats, smoothing the skin.

pH
Alkaline (6.8 - 9.0)
Family
Anion (-)
Element
HCO₃ · HCO₃⁻
Origin
Deep sedimentary basins
Best for
Skin softness & drinking tradition
Temperature
Variable (Cold to Hot)

What it feels like

Gentle physico-chemical buffering action; in a bath, leaves a characteristic emollient touch on the skin.

Sensations & traditions

Did you know — Napoleon III popularized the waters of Vichy, which remain emblematic of French spa tradition.
Good to know — Severe arterial hypertension (if high sodium content).

Wellness and cultural information — no therapeutic claims. If in doubt, ask a healthcare professional.

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3250 bicarbonate springs to explore

Frequently asked questions

What is bicarbonate water?
The Bicarbonate ion (HCO₃⁻) is the main buffer system of blood plasma. In a bath, it acts as a gentle emollient and leaves a smoothed-skin sensation. Known as "Beauty Water" for its ability to saponify surface fats, smoothing the skin.
What does a bicarbonate-water bath feel like?
Soft "beauty water" touch. Smoothed-skin sensation. Tradition of drinking cures. Post-bath comfort.
Where can I find bicarbonate hot springs?
Thermae lists 3250 bicarbonate-water places worldwide, including Vichy (France), Baden-Baden (Germany), Kawayu Onsen (Japan). Explore the map to filter them by country and destination.
Are there any precautions with bicarbonate water?
Severe arterial hypertension (if high sodium content). Wellness and cultural information — no therapeutic claims. If in doubt, ask a healthcare professional.

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