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Hot Springs for Atopic Dermatitis | Sulfur & Acidic Springs: Benefits and Precautions

Published May 6, 2026·1min read

Sulfur springs and acidic springs are officially indicated for atopic dermatitis and psoriasis in Japan's Ministry of the Environment guidelines. However, their strong stimulating properties can worsen symptoms in some cases — consulting a dermatologist and post-bath moisturising are essential.

Applicable spring types
2 types
Analysis records
10 records
Table of Contents
  1. 2 Spring Types Indicated for Chronic Skin Conditions
  2. Bathing precautions for sensitive skin

2 Spring Types Indicated for Chronic Skin Conditions

Japan's Ministry of the Environment lists two spring types with bathing indications for atopic dermatitis and psoriasis:

  • Sulfur springs: Soften the stratum corneum and offer antiseptic/anti-inflammatory action. Hydrogen sulfide and sulfur-ion types act differently on the skin.
  • Acidic springs: Strong bactericidal action; effective for chronic skin conditions. Strongly acidic springs (pH ≤ 3, e.g. Kusatsu Onsen) have especially high antiseptic potency.

Bathing precautions for sensitive skin

  • Avoid bathing during acute flare-ups or when skin is broken or oozing
  • Start with short soaks (5–10 min) or partial immersion to gauge skin response
  • Rinse with lukewarm fresh water after bathing to remove spring residue
  • Apply moisturiser immediately after drying to support the skin barrier
  • Stop bathing if itching or irritation increases

Related Onsen Facilities

Sulfur Spring
Acidic Spring
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References

Explore Spring Types for This Condition

Sulphur Springs: Milky White Waters with Powerful Skin Benefits →Acidic Springs: Powerfully Antibacterial Waters for Skin Conditions →

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