ホテルエール
Hotel AileSodium Bicarbonate-Chloride spring
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Bicarbonate HCO₃⁻
- "soda" — softens skin, leaves it smooth.
- Smooth skindry, rough skin
- Recoveryfatigue, stress
A sodium-led bicarbonate spring, posted under its older classification name meaning "soda water containing common salt" — jūsō-sen in the traditional vocabulary. The bicarbonate gives the soft, smooth feel that places it in Japan's beauty-water family, while chloride, running to a little over 40 percent of the anion balance, adds a salty edge that helps warmth linger on the skin. Moderately mineralized rather than sharp, and the posted indications track the chemistry: chronic skin conditions, wounds and burns, alongside neuralgia and chronic rheumatoid arthritis.
大分県衛生研究所