布袋の湯
Hotei-no-Yu湯
Simple
Sodium-Calcium Chloride-Sulfate spring
High silica
Composition fingerprint0.6 g/kg dissolved · Hypotonic
Na⁺74
Ca²⁺20
Cl⁻52
SO₄²⁻40
◀ CationsAnions ▶
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Chloride Cl⁻
- table-salt anion — coats the skin and holds heat in.
Known good for
- Smooth skindry, rough skin
- Recoveryfatigue, stress
A weakly alkaline simple thermal spring with light overall mineralization (0.634 g/kg) but a respectable 60.9 mg/kg of metasilicic acid — enough to place it in the Japanese 'beauty-water' family with a subtly smoothing feel on the skin. On the anion side chloride and sulfate sit almost evenly matched, giving a sodium-led, clean-tasting profile rather than any one mineral character dominating.
東邦化工建設株式会社 三島分析センター