Often affectionately referred to as 'beauty baths' or 'skincare baths,' bicarbonate springs are highly popular among women, though men also appreciate the benefits of smooth skin. But why are they called 'beauty baths'? Let's explore the scientific mechanisms behind this.

What Are Bicarbonate Springs?

Bicarbonate springs refer to hot springs that contain a certain amount of bicarbonate ions. If the hot spring water contains more than 1,000 mg of bicarbonate ions per kilogram, it is classified as a bicarbonate spring.

The main components of these springs are bicarbonate ions combined with sodium, calcium, magnesium, and other elements.

Appearance and Characteristics

Color: Clear to milky white Smell: Almost odorless Texture: Slippery, smooth pH: Often mildly alkaline

When touched, the water feels distinctly slippery. This unique slipperiness is a hallmark of these springs.

Why Do They Have Skincare Benefits?

Bicarbonate springs are often mildly alkaline. This alkalinity softens and removes old keratin from the skin, providing a natural peeling effect.

During the bath, you can feel your skin becoming smoother, and once you get out, your skin feels silky. This sensation can be quite addictive once experienced.

The Mechanism of Skincare Benefits

Alkaline hot springs have the ability to emulsify the sebum on the skin's surface. Once emulsified, dirt and old keratin in the pores are more easily removed. This is the secret behind the 'skincare benefits.'

Additionally, bicarbonate ions soften the skin. This dual effect creates smooth, silky skin.

Caution: Post-Bath Dryness

However, there is one caution to note. Bicarbonate springs can cause the skin to dry out easily after bathing.

After removing old keratin, it would be a waste not to moisturize. It is recommended to apply moisturizing cream immediately after bathing.

Main Benefits

Common indications for bicarbonate springs:

• Cuts and burns
• Chronic skin diseases
• Skincare benefits
• Neuralgia and muscle pain
• Joint pain and frozen shoulder
• Motor paralysis and joint stiffness

In addition to skincare benefits, they are also said to be effective for cuts and burns.

Japan's Top Three Skincare Baths

Ureshino Onsen (Saga Prefecture): One of Japan's top three skincare baths. Sodium-bicarbonate spring.

Hinokami Onsen (Shimane Prefecture): An alkaline skincare bath.

Ryujin Onsen (Wakayama Prefecture): Sodium-bicarbonate spring.

These three are famous as 'Japan's top three skincare baths.' All are bicarbonate springs.

Other Notable Bicarbonate Springs

Kawanaka Onsen (Gunma Prefecture): Known for its strong alkalinity and skincare benefits.

Otari Onsen (Nagano Prefecture): Popular as a 'beauty bath.'

Recommended For

Those aiming for beautiful skin, those who want smooth skin, and those who enjoy the slippery sensation. Bicarbonate springs are ideal for those seeking skin-friendly hot springs.

Tips for Bathing

To maximize the skincare benefits of bicarbonate springs, post-bath moisturizing is crucial.

After bathing, the skin, having shed old keratin, is in a highly dry state. Applying moisturizing cream immediately after bathing helps maintain the skincare benefits.

Also, avoid prolonged bathing. 10 to 15 minutes is appropriate. Prolonged soaking can reduce the skin's barrier function.

Conclusion

Bicarbonate springs are Japan's proud 'beauty baths.' Their alkaline properties remove old keratin from the skin, leaving it smooth and silky.

For those aiming for beautiful skin, bicarbonate springs are ideal. Just remember to moisturize after bathing. A journey to visit Japan's top three skincare baths can be a delightful experience for hot spring enthusiasts. Experience the skincare benefits of these hot springs for yourself.