Hot Springs for Wound Healing | 4 Spring Types with Antiseptic & Regenerative Effects

4 Spring Types Indicated for Skin Wounds

Japan's Ministry of the Environment recognises four spring types for wound healing. Their mechanisms differ, but antiseptic action, skin softening, and blood-flow promotion are common threads.

• Chloride springs: Salt adjusts osmotic pressure at the wound, aiding antisepsis and tissue repair — known as the "wound spring"
• Bicarbonate springs: Soften and cleanse the skin; famed as the "beautiful skin spring"; create a healing environment around wounds
• Sulphate springs: Traditionally called the "wound spring" and "drinking spring"; promote circulation and tissue repair
• Carbon dioxide springs: CO₂ absorbed through skin dilates peripheral vessels, boosting blood and oxygen supply around the wound site

Precautions for bathing with wounds

• Deep wounds, suspected infections, and post-suture wounds are contraindicated — get medical clearance first
• Ask your doctor whether a superficial, closed wound is safe for bathing
• Keep soaks short (5–10 min) to prevent the wound from becoming waterlogged
• Pat dry gently with a clean towel and protect the wound after bathing