Kaikiso
Analysis VerifiedThe Kaikiso source is the private spring of Kappo Ryokan Kaikiso, an inn established in 1922. It has been carefully preserved on the tranquil coast of the Kunisaki Peninsula. Rich in metasilicic acid, this spring is known for promoting skin metabolism and is often called a "skin-beautifying spring." The soft, clear water gently envelops both body and mind, perfect for those seeking a peaceful bathing experience in a historic setting.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
Transdermal absorption gently supports skin hydration and muscle relaxation.
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.
As this is an 18.5°C cold spring, it is heated for bathing. The water is soft and rich in metasilicic acid, making it gentle on the skin. A long, slow soak is recommended to promote deep relaxation. Moisturizing after your bath will help maintain the skin's silky feeling.
With a weakly alkaline pH of 7.6 and 53.4 mg/kg of metasilicic acid, this spring meets the official onsen criteria. This component, a natural moisturizing agent, may support skin metabolism, leading to a silky skin texture. Its gentle quality is perfect for deep relaxation and relieving daily fatigue. As a form of balneotherapy, it can help restore balance to mind and body.
There are no specific contraindications, but as a general precaution, avoid bathing when unwell or after consuming alcohol. The water is drinkable, but excessive consumption should be avoided.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Kaikiso
- Spring type
- Hot Spring
- Old spring type name
- 弱アルカリ性低張性冷鉱泉
- Source temperature
- 18.5℃
- pH
- 7.5
- Flow type
- 動力揚湯
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2020-06-24
- Analyst organization
- 公益社団法人大分県薬剤師会
- Registration No.
- 大分県第3号
Cations
- Sodium ion Na⁺
- 35.0 mg/kg
- Potassium ion K⁺
- 5.2 mg/kg
- Magnesium ion Mg²⁺
- 10.2 mg/kg
- Calcium ion Ca²⁺
- 35.9 mg/kg
- Lead ion Pb²⁺
- 0.00 mg/kg
- Strontium ion Sr²⁺
- 0.30 mg/kg
- Copper ion Cu²⁺
- 0.00 mg/kg
- Cadmium ion Cd²⁺
- 0.00 mg/kg
- Total cations
- 0.09 mg/kg
Anions
- Fluoride ion F⁻
- 0.20 mg/kg
- Chloride ion Cl⁻
- 24.6 mg/kg
- Sulfate ion SO₄²⁻
- 24.1 mg/kg
- Bicarbonate ion HCO₃⁻
- 175 mg/kg
- Bromide ion Br⁻
- 0.10 mg/kg
- Nitrate ion NO₃⁻
- 9.9 mg/kg
- Hydrogen phosphate HPO₄²⁻
- 0.50 mg/kg
- Total anions
- 0.23 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
- 53.4 mg/kg
- Metaboric acid HBO₂
- 0.20 mg/kg
- Total undissociated
- 0.05 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 9.2 mg/kg
- Free hydrogen sulfide H₂S
- 0.00 mg/kg
- Total dissolved gas
- 0.01 mg/kg
Trace Components
- Radon Rn
- 0
Totals
- Total dissolved substances
- 0.38 mg/kg
- Component total
- 0.38 mg/kg
- Evaporation residue
- 0.28 mg/kg
Usage
- Usage status
- Unknown
Indications & Contraindications
- Bathing indications
- Chronic pain or stiffness in muscles and joints, Muscle stiffness due to motor paralysis, Poor circulation, Peripheral circulatory failure, Gastrointestinal dysfunction, High blood pressure (mild), Impaired glucose tolerance (diabetes), Mild hypercholesterolemia, Mild asthma or emphysema, Hemorrhoid pain, Autonomic instability, Stress-related symptoms (insomnia, depression, etc.), Convalescence, Fatigue recovery, Health promotion
- Contraindications
- Active stages of illness (especially with fever), Active tuberculosis, Advanced malignant tumors or severe anemia causing significant physical weakness, Severe heart or lung disease causing shortness of breath with light activity, Severe kidney disease with swelling, Gastrointestinal bleeding, Visible bleeding, Acute exacerbation of chronic illness
Drinking
- Drinkability
- Not drinkable
- Drinking notes
- Drinking is not permitted by the public health center.