下呂温泉
Gero OnsenSodium spring
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Aches & jointsstiff shoulders
- Smooth skindry, rough skin
- Recoveryfatigue, stress
An alkaline simple thermal spring from Gero, showing a high pH of 9.4. Sodium-led with small amounts of bicarbonate, carbonate and sulfate, it sits squarely in the Japanese beauty-water family, leaving the skin smooth and slippery. The source emerges hot at 56 °C, yet the water itself is gentle and low in irritation.
Analyzed Dec 3, 2018