湯左の沢1号源泉・湯左の沢2号源泉
Yuhidari-no-sawa Springs No. 1 and No. 2Operated by · 堺屋森のホテル ヴァルトベルク
Mixed source
酸
Acidic
+ 含硫黄泉 · Sulfate · Chloride
Hot source · 51°CUltra-acidicSulfur-richHigh silica
Known good for
- Skin conditionsatopic skin, eczema
- Circulationtired legs
- Aches & jointsstiff shoulders
- Sensitive-skin cautionbroken or dry skin
A strongly acidic, sulfur-bearing spring: magnesium leads the cations, while sulfate and chloride share the anion side. The acidity is sharp enough to prickle on the skin, and dissolved hydrogen sulfide leaves a faint rotten-egg note over the water. Mineralization is moderate at 2,079 mg/kg, but metasilicic acid stands out at 206 mg/kg, enough silica to leave a thin film that makes skin feel noticeably smoother afterwards. The posted analysis lists the bath as a blend of the Yuhidari-no-sawa No. 1 and No. 2 sources.
Analyzed Nov 30, 2016·株式会社丹野
