Yubunosato Ryoso Makibanoie
Analysis VerifiedThis private source is located in the renowned Yufuin Onsen, nestled at the foot of Mt. Yufu. Pumped from 200 meters underground, the Yubunosato Ryoso Makibanoie source is a weakly alkaline simple spring with a pH of 8.1. Yufuin has long been cherished as a therapeutic spa town, establishing itself as a tranquil retreat by intentionally avoiding a bustling entertainment district. Embodying this philosophy, the water is exceptionally gentle and kind to the skin. Steeping in these waters allows you to forget the daily hustle and embrace a serene moment, as if held by Yufuin's abundant nature.
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.
A trace component with gentle antibacterial and anti-inflammatory action.
- Metasilicic acid215 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 temperature56.8℃
- 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.
The source temperature is high at 56.8°C, so the water may be diluted or cooled. Begin by carefully warming your body with "kake-yu," starting from your feet. As a gentle, weakly alkaline spring, it's suitable for long soaks, but taking breaks will prevent fatigue and enhance relaxation.
With a pH of 8.1, this weakly alkaline water helps soften and wash away old skin cells. Furthermore, it is exceptionally rich in metasilicic acid (215.0 mg/kg), a known skin-beautifying component, promising a moisturized, silky skin feel post-bath. This gentle simple spring also offers deep relaxation, making it ideal for those seeking to relieve daily fatigue.
While the spring is gentle, it is not a cure-all. Avoid bathing if you have acute illnesses (especially with fever), active tuberculosis, malignant tumors, or other serious conditions.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Yubunosato Ryoso Makibanoie
- Spring type
- Simple Hot Spring
- Old spring type name
- 単純温泉
- Source temperature
- 56.8℃
- pH
- 8
- Flow type
- 動力揚湯
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2024-10-09
- Valid until
- 2034-10-24
- Analyst organization
- 公益社団法人大分県薬剤師会
- Registration No.
- 大分県第3号
Cations
- Lithium ion Li⁺
- 0.20 mg/kg
- Sodium ion Na⁺
- 108 mg/kg
- Potassium ion K⁺
- 24.6 mg/kg
- Magnesium ion Mg²⁺
- 8.2 mg/kg
- Calcium ion Ca²⁺
- 10.3 mg/kg
- Manganese ion Mn²⁺
- 0.20 mg/kg
- Lead ion Pb²⁺
- < 0.01 mg/kg
- Copper ion Cu²⁺
- < 0.05 mg/kg
- Cadmium ion Cd²⁺
- < 0.001 mg/kg
- Total cations
- 152 mg/kg
Anions
- Fluoride ion F⁻
- 0.20 mg/kg
- Chloride ion Cl⁻
- 81.2 mg/kg
- Sulfate ion SO₄²⁻
- 49.5 mg/kg
- Bicarbonate ion HCO₃⁻
- 216 mg/kg
- Bromide ion Br⁻
- 0.20 mg/kg
- Hydrogen phosphate HPO₄²⁻
- 0.50 mg/kg
- Total anions
- 348 mg/kg
Undissociated Components
- Sulfuric acid H₂SO₄
- 0.00 mg/kg
- Phosphoric acid H₃PO₄
- 0.00 mg/kg
- Arsenious acid HAsO₂
- 0.00 mg/kg
- Metasilicic acid H₂SiO₃
- 215 mg/kg
- Metaboric acid HBO₂
- 4.1 mg/kg
- Total undissociated
- 219 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 8.8 mg/kg
- Free hydrogen sulfide H₂S
- 0.00 mg/kg
- Total dissolved gas
- 8.8 mg/kg
Trace Components
- Radon Rn
- < 7.4 Bq/kg
Totals
- Total dissolved substances
- 718 mg/kg
- Component total
- 727 mg/kg
- Evaporation residue
- 561 mg/kg
Usage
- Usage status
- Unknown
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
