Ureshino Onsen Haito Co. No.4-3 Source
Analysis UnverifiedRecorded in the 8th-century Hizen Fudoki as a spring that "heals people's ills," Ureshino later welcomed travelers on the Nagasaki Kaido. This pumped 88.3°C source is clear and faintly salty, with the slippery touch of a sodium bicarbonate spring and 140.6 mg/kg of metasilicic acid—ideal for anyone seeking smooth, moist skin.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
A trace component with gentle antibacterial and anti-inflammatory action.
Mild antibacterial action keeps the skin clean. Trace transdermal absorption supports tooth and bone health.
A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.
- Chloride (salt)250 mg/kg
- Feel
- Tastes salty; the warmth lasts after you get out.
- Said to
- Salt is said to form a film on the skin that keeps in heat and moisture. Bathing indications include cuts, poor circulation and dry skin.
- Note
- May sting cuts. Strong salty water can tire you—avoid long soaks.
- Bicarbonate (baking soda)955 mg/kg
- Feel
- Your skin feels smooth and silky.
- Said to
- Said to remove old skin cells and excess sebum. Bathing indications include cuts, poor circulation and dry skin.
- Note
- It can leave skin dry—moisturize after bathing.
- Metasilicic acid141 mg/kg
- Feel
- Your skin may feel smoother.
- Said to
- 50 mg/kg or more is said to mark a “skin-beautifying spring”; it is also used in skincare.
- Note
- The “skin-beautifying” label is a common rule of thumb, not a legal standard.
- Source temperature88.3℃
- Feel
- The source is 42°C or hotter; the bath may be on the hot side.
- Said to
- Heat is said to boost circulation and warm the body.
- Note
- Older people and those with high blood pressure or heart conditions should avoid baths of 42°C or more. Keep soaks short.
Effects are general descriptions based on the Ministry of the Environment’s indications by spring type, not a guarantee.
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.
At 88.3°C the source is very hot, so keep clear of the inlet and test the tub first. The weakly alkaline bicarbonate water lifts skin oils—use little soap, smooth the water over your skin, and moisturize soon after.
Bicarbonate (954.7 mg/kg) and sodium (461.5 mg/kg) gently lift old skin cells for silky skin, while 250.3 mg/kg of chloride wraps the body in restorative warmth that lingers after the bath.
The 88.3°C source is very hot—beware of scalding and avoid overlong soaks. The water strips skin oils, so dry-skinned bathers should moisturize afterward.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Ureshino Onsen Haito Co. No.4-3 Source
- Spring type
- Sodium Bicarbonate and Chloride Spring
- Old spring type name
- 含食塩－重曹泉
- Source temperature
- 88.3℃
- pH
- 7.76
- Flow rate
- 110 L/min
- Flow type
- 動力揚湯
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2012-05-16
- Analyst organization
- 財団法人佐賀県環境科学検査協会
Cations
- Lithium ion Li⁺
- 1.3 mg/kg
- Sodium ion Na⁺
- 462 mg/kg
- Potassium ion K⁺
- 27.0 mg/kg
- Ammonium ion NH₄⁺
- 1.2 mg/kg
- Magnesium ion Mg²⁺
- 0.70 mg/kg
- Calcium ion Ca²⁺
- 5.8 mg/kg
- Lead ion Pb²⁺
- not detected
- Strontium ion Sr²⁺
- 0.40 mg/kg
- Cadmium ion Cd²⁺
- not detected
- Total cations
- 498 mg/kg
Anions
- Fluoride ion F⁻
- 9.0 mg/kg
- Chloride ion Cl⁻
- 250 mg/kg
- Thiosulfate ion S₂O₃²⁻
- 0.10 mg/kg
- Sulfate ion SO₄²⁻
- 9.3 mg/kg
- Bicarbonate ion HCO₃⁻
- 955 mg/kg
- Iodide ion I⁻
- 0.10 mg/kg
- Nitrate ion NO₃⁻
- 0.50 mg/kg
- Total anions
- 1224 mg/kg
Undissociated Components
- Metasilicic acid H₂SiO₃
- 141 mg/kg
- Metaboric acid HBO₂
- 42.0 mg/kg
- Total undissociated
- 183 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 5.5 mg/kg
- Free hydrogen sulfide H₂S
- 0.00 mg/kg
- Total dissolved gas
- 5.5 mg/kg
Totals
- Total dissolved substances
- 1905 mg/kg
- Component total
- 1910 mg/kg
Usage
- Usage status
- Unknown
Indications & Contraindications
- Bathing indications
- Cuts and grazes, Peripheral circulatory failure, Poor circulation, Xeroderma, Depression
- General indications
- High blood pressure (mild), Rheumatoid arthritis, Autonomic instability, Insomnia, 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
