Shotokuji Onsen Hatsuhana Gensen
Analysis UnverifiedNestled in a tranquil Yamanashi City village, Shotokuji Onsen is a simple, therapeutic hot spring, cherished by locals for generations. Its highly alkaline waters, boasting a pH of 9.5, offer a thick, serum-like texture. As you slowly immerse yourself in the lukewarm bath, daily stiffness gently melts away, offering deep relaxation and potential pain relief. After your soak, anticipate surprisingly silky skin and a renewed sense of rejuvenation, perfect for those seeking an escape from the hustle to indulge in self-care.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.
Scores are calculated from mineral analysis data based on the Mineral Spring Analysis Guidelines (Ministry of Environment, Japan). They are unrelated to facility atmosphere or service quality.
▸Note
The temperature, pH and component values shown here are based on the hot spring analysis (source). Actual values in the bath may differ depending on heating, dilution, recycling and filtration. Please check current usage status at the facility.
Due to the strong alkalinity (pH 9.5), prolonged soaking may over-soften the skin. Aim for 10–15 minutes per session initially, and rinse lightly with lukewarm water afterward to protect the skin's natural barrier. The mild temperature of around 32°C allows for a long, leisurely soak—just be mindful of overheating and consider taking breaks between dips.
Shotokuji Onsen Hatsuhana is celebrated as a 'beauty spring' thanks to its high alkalinity of pH 9.5. The sodium-dominant water (95 mval%) gently dissolves old keratin for noticeably smoother skin, while the abundant metasilicic acid content of 126.7 mg/kg provides deep moisturizing benefits. It is highly recommended for those dealing with skin conditions, chronic dermatitis, poor circulation, or muscle fatigue.
Due to the high alkalinity, those with sensitive skin or mucous membranes should avoid prolonged bathing. People with acute illnesses, active tuberculosis, malignant tumors, or serious heart or kidney conditions should refrain from bathing.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Shotokuji Onsen Hatsuhana Gensen
- Spring type
- Alkaline simple spring (hypotonic alkaline low temperature spring)
- Source temperature
- 32.2℃
- pH
- 9.5
- Flow rate
- 179.2 L/min
- Flow type
- Pumped
- Osmotic pressure
- Hypotonic
Analysis Document
- Analysis date
- 2018-04-05
- Analyst organization
- 一般社団法人 山梨県食品衛生協会
- Registration No.
- 16山梨み自第4号
Cations
- Hydrogen ion H⁺
- 0.00 mg/kg
- Lithium ion Li⁺
- 0.00 mg/kg
- Sodium ion Na⁺
- 56.8 mg/kg
- Potassium ion K⁺
- 3.8 mg/kg
- Ammonium ion NH₄⁺
- 0.00 mg/kg
- Magnesium ion Mg²⁺
- 0.00 mg/kg
- Calcium ion Ca²⁺
- 0.60 mg/kg
- Aluminum ion Al³⁺
- 0.00 mg/kg
- Manganese ion Mn²⁺
- 0.00 mg/kg
- Iron(II) ion Fe²⁺
- 0.10 mg/kg
- Iron(III) ion Fe³⁺
- 0.00 mg/kg
- Strontium ion Sr²⁺
- 0.00 mg/kg
- Barium ion Ba²⁺
- 0.00 mg/kg
- Total cations
- 0.06 mg/kg
Anions
- Fluoride ion F⁻
- 1.0 mg/kg
- Chloride ion Cl⁻
- 4.0 mg/kg
- Hydroxide ion OH⁻
- 0.50 mg/kg
- Hydrogen sulfide ion HS⁻
- 0.00 mg/kg
- Thiosulfate ion S₂O₃²⁻
- 0.00 mg/kg
- Sulfate ion SO₄²⁻
- 3.5 mg/kg
- Bicarbonate ion HCO₃⁻
- 24.4 mg/kg
- Carbonate ion CO₃²⁻
- 60.1 mg/kg
- Bromide ion Br⁻
- 0.00 mg/kg
- Iodide ion I⁻
- 0.00 mg/kg
- Hydrogen sulfate HSO₄⁻
- 0.00 mg/kg
- Hydrogen phosphate HPO₄²⁻
- 0.40 mg/kg
- Arsenite ion AsO₂⁻
- 0.10 mg/kg
- Sulfide ion S²⁻
- 0.00 mg/kg
- Hydrogen metasilicate HSiO₃⁻
- 0.00 mg/kg
- Metaborate ion BO₂⁻
- 2.0 mg/kg
- Total anions
- 0.10 mg/kg
Undissociated Components
- Phosphoric acid H₃PO₄
- 0.00 mg/kg
- Arsenious acid HAsO₂
- 0.00 mg/kg
- Metasilicic acid H₂SiO₃
- 127 mg/kg
- Metaboric acid HBO₂
- 0.00 mg/kg
- Total undissociated
- 0.13 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 0.00 mg/kg
- Free hydrogen sulfide H₂S
- 0.00 mg/kg
- Total dissolved gas
- 0.00 mg/kg
Totals
- Total dissolved substances
- 0.28 mg/kg
- Component total
- 0.28 mg/kg
- Evaporation residue
- 0.24 mg/kg
Usage
- Heating
- No
- Dilution
- No
- Recycle / Filter
- Filtered
- Additives
- No
- Disinfection
- Yes（Chlorine-based disinfectant）
Indications & Contraindications
- Bathing indications
- Autonomic instability, Insomnia, Depression
- General indications
- High blood pressure (mild), Rheumatoid arthritis, Chronic pain or stiffness in muscles and joints, Muscle stiffness due to motor paralysis, Gastrointestinal dysfunction
- Contraindications
- Acute illness (especially with fever), Active tuberculosis, Malignant tumors, Severe heart disease, Respiratory failure, Renal failure, Bleeding disorders, Severe anemia, Any actively progressing illness, Pregnancy (especially early and late stages)
Drinking
- Drinkability
- Not drinkable
