Certified as a "Beautiful Skin Onsen"!
"Have you ever felt that your skin seems to improve after soaking in an Onsen?"
After a detailed analysis conducted by POLA ORBIS HOLDINGS, our Onsen has been scientifically certified as having skin-beautifying properties.
Our "Relaxation Booster Onsen" is said to smooth and refine the skin. It is particularly recommended for those who feel roughness or dullness in their complexion.
The process:
- The gentle effect of the Onsen helps soften the skin and makes it easier to remove unnecessary keratin (the cause of dullness).
- Skincare products applied after bathing penetrate more effectively.
- Resulting in supple, radiant, and healthy-looking skin.
In addition to relaxation and refreshment, we invite you to experience the unique "skin-beautifying effects" of Mastramp's Onsen.














