Sulphur Springs: Milky White Waters with Powerful Skin Benefits

What is a Sulphur Spring?

A sulphur spring contains total sulphur (S) at 2 mg or more per kilogram of spring water. Two subtypes exist: the hydrogen sulphide type (H₂S dominant) and the sulphur type (HS⁻ dominant).

Although clear at the source, the water oxidizes in air to produce milky-white, blue, or greenish turbidity. The unmistakable boiled-egg smell of hydrogen sulphide is a beloved hallmark of Japanese hot springs — Manza Onsen (Gunma) and Shiobara Onsen (Tochigi) are famous examples.

Indications for Bathing

• Atopic dermatitis
• Plaque psoriasis
• Chronic eczema
• Epidermoid suppuration

For the hydrogen sulphide type*, peripheral circulatory failure is added to the above indications.

Indications for Drinking

• Impaired glucose tolerance (diabetes)
• Dyslipidemia (high cholesterol)

How to Bathe in a Sulphur Spring

1. Remove silver jewelry (rings, necklaces, watches) before bathing — sulphur causes blackening (silver sulphide).
2. For skin condition improvement, pat dry without rinsing to keep the antibacterial components on the skin.
3. Hydrogen sulphide collects at low levels — even outdoors, be mindful of ventilation.