別府温泉 おやど湯の丘
Beppu Onsen Oyado YunookaOperated by · 田中純二
湯
Simple
- Color
- colorless and clear
- Taste
- tasteless
- Odor
- odorless
Sodium Bicarbonate-Sulfate spring
pH 7.5NeutralHot source · 72°CHigh silica
Composition fingerprint0.5 g/kg dissolved · Hypotonic
Na⁺66
Ca²⁺19
HCO₃⁻55
SO₄²⁻35
◀ 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
- Aches & jointsstiff shoulders
- Smooth skindry, rough skin
- Recoveryfatigue, stress
A simple thermal spring rising in the Tsurumi district of Beppu, and one of the hotter natural sources in the country. Despite that heat it is gentle in composition — neutral pH, hypotonic, and only 0.53 g/kg of dissolved solids, so the water reads as soft rather than assertive on the skin, with no colour, taste or smell to speak of. What sets it apart is metasilicic acid at 162.4 mg/kg: enough silica to leave the thin moisturising film that places this water squarely in Japan's beauty-water family.
Sampled at delivery pipe·Analyzed May 11, 2016·株式会社シー・アール・シー食品環境衛生研究所·Cert no. W160511-0543