spring quality

What is the “spring quality” of Japanese hot springs?

Japanese hot springs are broadly classified into 10 types (simple hot springs + 9 types of therapeutic springs) based on their ingredients and quantity. Typical types include skin-friendly “simple hot springs,” highly heat-retaining and moisturizing “chloride springs,” and skin-beautifying “bicarbonate springs” and “sulfur springs.” These springs vary greatly in efficacy and texture.

The main types and their characteristics are as follows:

1.Simple hot springs: Contains few ingredients and is less irritating. Gentle on the skin, making them suitable for children and the elderly.

2.Chloride springs (formerly known as salt springs): Has excellent sterilizing and heat-retaining properties. The salt forms a film on the skin, preventing chills after bathing.

3.Bicarbonate springs (formerly known as baking soda springs, etc.): Has a skin-beautifying effect by removing dead skin cells and leaving the skin smooth.

4.Sulfate springs (formerly known as Glauber’s salt springs and gypsum springs): Effective in revitalizing the skin, easing sensitivity to cold, and promoting blood circulation.

5.Sulfur springs: Has a distinctive scent and is known for preventing blemishes and softening the keratin.

6.Acidic springs: Have very strong antibacterial properties and are effective against skin diseases.

7.Carbonated springs: Carbon dioxide dilates blood vessels and improves blood circulation.

8.Simple hot springs: They contain few ingredients and are gentle on the skin, making them suitable for children and the elderly.

9.Chloride springs (formerly known as salt springs): They have strong sterilizing and heat-retaining properties. The salt forms a film on the skin, preventing it from cooling down after bathing.

10.Bicarbonate springs (formerly known as baking soda springs, etc.): They are highly effective at removing dead skin cells and leaving the skin smooth and beautiful.

11.Sulfate springs (formerly known as Glauber’s salt springs and gypsum springs): They are effective in supporting skin revitalization, easing sensitivity to cold, and improving blood circulation.

12.Sulfur springs: They have a distinctive scent and are effective in preventing blemishes and softening keratin.

13.Acid springs: They have very strong sterilizing properties and are effective against skin diseases.

14.Carbonated springs: Carbon dioxide dilates blood vessels and improves circulation.