Kurama Onsen
くらま温泉
Kyoto Sakyo-ku, Kyoto
京都府 左京区

Kurama Onsen Gensen No.2

Analysis Unverified
くらま温泉源泉 No.2
The Skin-Beautifying Spring of Kyoto's Mountains

Kurama Onsen Gensen No.2 is the source that feeds the rare natural hot spring facility "Kurama Onsen" within Kyoto City. Located near the gate of Kurama-dera Temple, it is said to have originated from a tea field in the late Meiji period. The facility is renowned for its open-air bath surrounded by the beauty of the changing seasons, offering a soothing retreat for hikers and tourists visiting Kibune Shrine and Kurama-dera Temple.

AI Generated
SPRING TYPE
Sulfur Spring

These springs have an aroma that recalls boiled-eggs and can be cloudy white, blue or green. They boast strong antibacterial qualities and can be effective at healing wounds and relieving inflammatory skin conditions while also promoting circulation.

See features & indications
Bathing indications
Atopic dermatitisPlaque psoriasisChronic eczemaEpidermal suppuration
Drinking indications
Impaired glucose tolerance (diabetes)Dyslipidemia (high cholesterol)

※ Only at facilities permitted to serve drinking water. 200–500 mL/day recommended.

Cautions
  • 皮膚または粘膜の敏感な方、高齢者の皮膚乾燥症の方は禁忌です。
  • 肌が弱い方は入浴後に真湯で洗い流してください。
Definition :Contains 2 mg/kg or more of total sulfur.
Source: 環境省「あんしん・あんぜんな温泉利用のいろは」(監修:日本温泉気候物理医学会)Read full article
PH VALUE
7.8
Mildly Alkaline
Acidic ← 07 Neutral14 → Alkaline
Mildly alkaline (pH 7.5-8.5). Cleansing effects begin to appear, the entrance to "beauty spring" with smooth skin feel.
TEMPERATURE
14.4
Cold Mineral Spring
Too cold to bathe directly; requires heating.
KEY MINERALS

The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).

Bicarbonate ionSee detail
162 mg/kg

Softens dead skin cells for a silky bathing feel.

Free hydrogen sulfide
0.4 mg/kg

The aroma typical of sulfur springs, with circulatory and antibacterial effects.

Metasilicic acidSee detail
16.9 mg/kg

A natural moisturizer that leaves a hydrated feel on the skin.

Fluoride ionSee detail
0.6 mg/kg

A trace antibacterial component that keeps skin clean.

1.3 mg/kg

A rare radioactive spring where trace radiation absorbed via inhalation and skin is expected to stimulate cells (the "hormesis effect").

CHARACTER · COMPOSITION PROFILE
1234StimulationBactericidalSkin BeautyHeat RetentionRelaxation

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.

USAGE
HeatedYesThe water is heated to maintain a suitable temperature for bathing.
DilutedYesWater is added to maintain the water level in the bathtub.
RecycledYesA circulation and filtration system is used for hygiene management.
FilteredYes
DisinfectedYesChlorine-based chemicals are used for hygiene management.
AdditivesNo

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.

SENSORY TEST
Color
無色透明
Smell
無臭
Taste
無味
EFFECTS
Spring-specific indications (bathing)
Atopic dermatitisPsoriasis vulgarisChronic eczemaEpidermal suppurationPeripheral circulatory failurePoor circulationChronic pain or stiffness in muscles and jointsMuscle stiffness due to motor paralysisGastrointestinal dysfunctionHigh blood pressure (mild)Impaired glucose tolerance (diabetes)DyslipidemiaAutonomic instabilityInsomniaDepressionFatigue recoveryHealth promotion
General indications (bathing)
Chronic pain or stiffness in muscles and joints (chronic stage of rheumatoid arthritisosteoarthritislow back painneuralgiafrozen shoulderbruisessprainsetc.)Muscle stiffness due to motor paralysisPoor circulationPeripheral circulatory failureGastrointestinal dysfunction (stomach discomfortintestinal gasetc.)High blood pressure (mild)Impaired glucose tolerance (diabetes)Mild hypercholesterolemiaMild asthma or emphysemaHemorrhoid painVarious symptoms caused by stress (such as sleep disorders)ConvalescenceFatigue recoveryHealth promotion
Contraindications
Active stages of illness (especially with fever)Active tuberculosisAdvanced malignant tumors or severe anemia with significant physical weaknessSevere heart or lung disease causing shortness of breath with slight movementSevere kidney disease with swellingGastrointestinal bleedingWhen there is visible bleedingAcute exacerbation of a chronic illnessPeople with sensitive skin or mucous membranes (especially those with photosensitivity)Xeroderma in the elderly
BATHING TIPS
AI Generated

The cold mineral source is heated for bathing. This weakly alkaline sulfur spring is gentle on the skin, making it suitable for long soaks. It is recommended to warm up slowly while enjoying the mountain scenery from the open-air bath. Remember to stay hydrated before and after bathing.

EFFECT STORY
AI Generated

The weak alkalinity of pH 8.5 gently removes old skin cells, leaving your skin feeling smooth. As a simple sulfur spring containing 8.6 mg/kg of total sulfur, it is said to promote blood circulation and aid in recovery from neuralgia and fatigue. It's the perfect bath to soothe a tired body after a nature walk in Kurama.

CAUTIONS
AI Generated

Please avoid bathing if you have general contraindications such as active illnesses or severe heart disease. As a sulfur spring, those with sensitive skin or mucous membranes should be cautious. Remove precious metals as they may tarnish.

※ See the analysis data below for detailed contraindications

ANALYSIS DATAView all analysis fields ▼

Source Info

Source name
くらま温泉源泉 No.2
Spring type
単純硫黄冷鉱泉(低張性・弱アルカリ性・冷鉱泉)
Source temperature
14.4℃
pH
7.8
Flow rate
1.8 L/min
Flow type
動力揚湯
Osmotic pressure
低張性

Analysis Document

Analysis date
2021-04-16
Analyst organization
日本水処理工業株式会社
Registration No.
大阪府第5号

Cations

Hydrogen ion H⁺
0.00 mg/kg
Lithium ion Li⁺
0.00 mg/kg
Sodium ion Na⁺
26.1 mg/kg
Potassium ion K⁺
1.0 mg/kg
Ammonium ion NH₄⁺
0.00 mg/kg
Magnesium ion Mg²⁺
5.3 mg/kg
Calcium ion Ca²⁺
29.2 mg/kg
Aluminum ion Al³⁺
0.10 mg/kg
Manganese ion Mn²⁺
0.30 mg/kg
Iron(II) ion Fe²⁺
0.20 mg/kg
Iron(III) ion Fe³⁺
0.00 mg/kg
Strontium ion Sr²⁺
0.20 mg/kg
Barium ion Ba²⁺
0.00 mg/kg
Total cations
0.06 mg/kg

Anions

Fluoride ion F⁻
0.60 mg/kg
Chloride ion Cl⁻
9.2 mg/kg
Hydrogen sulfide ion HS⁻
1.9 mg/kg
Thiosulfate ion S₂O₃²⁻
0.00 mg/kg
Sulfate ion SO₄²⁻
8.5 mg/kg
Bicarbonate ion HCO₃⁻
162 mg/kg
Carbonate ion CO₃²⁻
0.00 mg/kg
Bromide ion Br⁻
0.10 mg/kg
Iodide ion I⁻
0.00 mg/kg
Nitrate ion NO₃⁻
0.20 mg/kg
Hydrogen phosphate HPO₄²⁻
0.00 mg/kg
Total anions
0.18 mg/kg

Undissociated Components

Metasilicic acid H₂SiO₃
16.9 mg/kg
Total undissociated
0.02 mg/kg

Dissolved Gas

Free carbon dioxide CO₂
7.3 mg/kg
Free hydrogen sulfide H₂S
0.40 mg/kg
Total dissolved gas
0.01 mg/kg

Trace Components

Radon Rn
1.3 Bq/kg
Total sulfur S
2.3 mg/kg

Totals

Total dissolved substances
0.26 mg/kg
Component total
0.27 mg/kg
Evaporation residue
0.18 mg/kg

Usage

Heating
Yes(The water is heated to maintain a suitable temperature for bathing.)
Dilution
Yes(Water is added to maintain the water level in the bathtub.)
Recycle / Filter
Recycled / Filtered / A circulation and filtration system is used for hygiene management.
Additives
No
Disinfection
Yes(Chlorine-based chemicals are used for hygiene management.)

Indications & Contraindications

Bathing indications
Atopic dermatitis, Psoriasis vulgaris, Chronic eczema, Epidermal suppuration, Peripheral circulatory failure, Poor circulation, Chronic pain or stiffness in muscles and joints, Muscle stiffness due to motor paralysis, Gastrointestinal dysfunction, High blood pressure (mild), Impaired glucose tolerance (diabetes), Dyslipidemia, Autonomic instability, Insomnia, Depression, Fatigue recovery, Health promotion
General indications
Chronic pain or stiffness in muscles and joints (chronic stage of rheumatoid arthritis, osteoarthritis, low back pain, neuralgia, frozen shoulder, bruises, sprains, etc.), Muscle stiffness due to motor paralysis, Poor circulation, Peripheral circulatory failure, Gastrointestinal dysfunction (stomach discomfort, intestinal gas, etc.), High blood pressure (mild), Impaired glucose tolerance (diabetes), Mild hypercholesterolemia, Mild asthma or emphysema, Hemorrhoid pain, Various symptoms caused by stress (such as sleep disorders), Convalescence, Fatigue recovery, Health promotion
Contraindications
Active stages of illness (especially with fever), Active tuberculosis, Advanced malignant tumors or severe anemia with significant physical weakness, Severe heart or lung disease causing shortness of breath with slight movement, Severe kidney disease with swelling, Gastrointestinal bleeding, When there is visible bleeding, Acute exacerbation of a chronic illness, People with sensitive skin or mucous membranes (especially those with photosensitivity), Xeroderma in the elderly

Drinking

Drinkability
Not drinkable
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The descriptions, catch phrases, and translations on this page are generated by AI (Claude). pH, temperature, and component values are OCR-extracted from the official analysis report. Learn more