はまゆうの湯
Hamayu no YuOperated by · 合同会社 旅謝恩
曹
Bicarbonate
- Color
- colorless and clear
- Taste
- almost tasteless
- Odor
- almost odorless
Sodium Bicarbonate spring
pH 7.6Weakly alkalineHot source · 62°CHigh silica
Composition fingerprint1.5 g/kg dissolved · Hypotonic
Na⁺66
Mg²⁺18
HCO₃⁻73
Cl⁻19
◀ 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
- Recoveryfatigue, stress
A sodium-led bicarbonate spring rising in Kitahama, Beppu, listed on its certificate under the old name of pure juso-sen: the soda-water style that feels soft on the skin. Mildly alkaline and moderately mineralized with noticeable body, it belongs to Japan's beauty-water family. Metasilicic acid at 251 mg/kg is generous and leaves a thin silica film that makes skin feel noticeably smoother afterwards.
Sampled at wellhead·Analyzed Jul 18, 2023·公益社団法人大分県薬剤師会 検査センター·Cert no. 大薬検 第7R-23070007号