大川温泉 貴肌美人 緑の湯
Okawa Onsen Kihada-bijin Midori-no-yuOperated by · 九郎ハウジング株式会社
曹
Bicarbonate
+ Chloride
- Color
- faintly yellow and clear
- Taste
- faintly astringent
- Odor
- faint hydrogen sulfide
Sodium Bicarbonate-Chloride spring
pH 7.7Weakly alkalineHot source · 46°CHigh silica
Composition fingerprint1.5 g/kg dissolved · Hypotonic
Na⁺89
HCO₃⁻75
Cl⁻25
◀ 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
- Aches & jointsstiff shoulders
- Warmingcold sensitivity
A sodium-led bicarbonate spring in the classic jūsō-sen style, with a salt-tinged finish from a chloride sub-type. Weakly alkaline and soft on the skin, it sits squarely in Japan's beauty-water family. A generous 120 mg/kg of metasilicic acid leaves a thin silica film that makes the skin feel noticeably smoother afterwards, while a barely-there hydrogen sulfide note hangs over the bath.
Sampled at wellhead·Analyzed Jul 12, 2018·一般財団法人 九州環境管理協会