湯王温泉
Yuo Onsen Spring湯
Simple
- Color
- faintly yellow and clear
- Taste
- a faint metallic note
- Odor
- a faint metallic odor
Sodium Bicarbonate-Chloride spring
pH 7.5Weakly alkalineHigh silica
Composition fingerprint0.5 g/kg dissolved · Hypotonic
Na⁺66
Ca²⁺18
HCO₃⁻78
Cl⁻20
◀ CationsAnions ▶
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Bicarbonate HCO₃⁻
- "soda" — softens skin, leaves it smooth.
Known good for
- Smooth skindry, rough skin
- Recoveryfatigue, stress
A weakly alkaline simple thermal spring of light mineralization (467.7 mg/kg dissolved solids), but with a generous 136.9 mg/kg of metasilicic acid that lands it squarely in Japan's beauty-water family — the silica leaves a thin film that makes skin feel noticeably smoother. At the wellhead the water shows a faint yellow tint with a slight metallic note in both taste and smell; the bath is fed from a storage tank rather than directly from the wellhead.
Sampled at mixing tank·Analyzed Jan 24, 2025·株式会社メイキョー·Cert no. M24-4285
