All Columns›Mineral Guide
SULFIDE

Sulfide ion: Main Effects & Top 5

Published May 5, 2026·1min read

Sulfide ions (S²⁻, HS⁻) are the key components of sulfur springs. Their strong antibacterial action removes bacteria and irritants from the skin surface.

National maximum
0.5 mg/kg
@
Tokachigawa Onsen
Table of Contents
  1. What is Sulfide ion?
  2. Main Effects
  3. Sulfide ion Top 5 Hot Springs

What is Sulfide ion?

Sulfide ions (S²⁻, HS⁻) are the key components of sulfur springs. Their strong antibacterial action removes bacteria and irritants from the skin surface.

Main Effects

  • Antibacterial action
  • Indicated for atopic dermatitis and psoriasis
  • Characteristic rotten-egg aroma

Sulfide ion Top 5 Hot Springs

Top 5 hot springs registered on this site with the highest content.

* Top 5 among onsen analysis records registered in this app

References

Related Articles

Sulphur Springs: Milky White Waters with Powerful Skin Benefits
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.

Acidic Springs: Powerfully Antibacterial Waters for Skin Conditions
SPRING TYPEMay 5, 2026· 1min read

Acidic Springs: Powerfully Antibacterial Waters for Skin Conditions

Acidic springs contain hydrogen ions at 1 mg/kg or more (typically pH 2–3). Their strong antibacterial action is indicated for atopic dermatitis, plaque psoriasis, and epidermoid suppuration. Note: contraindicated for sensitive skin and elderly guests with dry skin — always confirm before bathing.

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.