Can onsen help psoriasis?

Yes — acidic and sulfur springs have an official bathing indication for psoriasis. However, these are highly stimulating and should be used with short soaks under dermatologist guidance.

Psoriasis & Onsen | Acidic and Sulfur Springs Officially Indicated

Applicable spring types

2 types

Analysis records

10 records

Psoriasis involves hyperactive skin cell turnover leading to thick, scaly plaques. Acidic springs (low pH) provide keratolytic and antimicrobial action; sulfur springs supply hydrogen sulfide, which suppresses skin inflammation and surface bacteria. European data on Dead Sea therapy (high salt, low pH) also document psoriasis improvement.

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Acidic Spring

Sulfur Spring

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References

Explore Spring Types for This Condition

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

SYMPTOMSMay 6, 2026· 1min read

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

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.

SYMPTOMSMay 6, 2026· 1min read

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

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.

SPRING TYPEMay 5, 2026· 1min read

Sulphur Springs: Milky White Waters with Powerful Skin Benefits

Sulphur springs contain total sulphur at 2 mg/kg or more. Their signature milky-white color and boiled-egg aroma (hydrogen sulphide) are icons of Japanese onsen culture. Indicated for atopic dermatitis, plaque psoriasis, and chronic eczema. The hydrogen sulphide type also helps peripheral circulatory failure.