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Chronic Eczema & Onsen | Sulfur Springs for Antibacterial and Anti-inflammatory Action

Published May 6, 2026·1min read

Chronic eczema is officially listed as a bathing indication for sulfur springs in Japan's Ministry of the Environment guidelines. Hydrogen sulfide (H₂S) in sulfur springs removes surface bacteria and allergens, reducing chronic skin inflammation. Bathing is only appropriate during stable chronic phases — acute flares with weeping skin are a contraindication.

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Chronic eczema involves persistent skin inflammation from a compromised barrier. Sulfur springs' H₂S eliminates surface pathogens and allergens, and sulfur compounds act on the stratum corneum to soften and remove excess scale, helping to resolve chronic skin lesions.

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