Magnesium ion: Main Effects & Top 5

National maximum

667.1 mg/kg

Shijo Kawaramachi Onsen Soraniwa Terrace Kyoto Bettei

Table of Contents

What is Magnesium ion?
Main Effects
Magnesium ion Top 5 Hot Springs

What is Magnesium ion?

Magnesium ion (Mg²⁺) is easily absorbed transdermally during bathing, helping relax muscle stiffness and supporting skin hydration.

Main Effects

Muscle tension relief
Skin moisture retention
Nerve calming effect

Magnesium ion Top 5 Hot Springs

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

RANK

Shijo Kawaramachi Onsen Soraniwa Terrace Kyoto Bettei

京都府 Shimogyo Ward, Kyoto

RANK

RANK

Saga Yamato Onsen Amandi

佐賀県 Yamato, Saga City

RANK

RANK

Niseko Onsen Ikoinoyuyado Iroha

北海道 Niseko, Abuta District

炭酸水素塩泉

44.2mg/kg

* Top 5 among onsen analysis records registered in this app

References

SPRING TYPEMay 5, 2026· 1min read

Sulphate Springs: "The Healing Waters" for Wounds, Skin & Digestion

Sulphate springs (SO₄²⁻ as the main anion) are called "the healing waters" for their anti-inflammatory, skin-moisturizing properties. Indicated for bathing (cuts, cold sensitivity, dry skin, depression) and drinking (biliary dysfunction, dyslipidemia, constipation).

SPRING TYPEMay 5, 2026· 2min read

Bicarbonate Springs: "Beauty Waters" for Smooth, Glowing Skin

Bicarbonate springs (HCO₃⁻ as the main anion) are known as "the beauty waters" because bicarbonate gently removes dead skin cells and sebum, leaving skin silky smooth. Indicated for bathing (cuts, cold sensitivity, dry skin) and drinking (gastroduodenal ulcers, diabetes, gout).

MINERALMay 5, 2026· 1min read

Calcium ion: Main Effects & Top 5

Calcium ion (Ca²⁺) exerts an astringent action that tightens the skin. Its calming properties help soothe flushing and inflammation after bathing.