Greetings from Asia!
Escaping the bustle of Tokyo is a must after a few days in the city and one must experience the healing waters of the Onsen (which I learned there are so many types!)
Our first stop was Hakone Yuryo-a day use onsen within walking distance from the train station. A private onsen is quite reasonable. I believe the total came to $72.16 USD, which can be split for up to four people. The water I learned is Alkaline type (Tanjun-sen) so great for skin.
I learned about the Japanese Hot Springs Act (温泉法, Onsen Hō), which regulates safety, quality and environmental protection. In short, Japan does not mess around with their Onsens and I think you pretty much cannot go wrong wherever you go. There are different types of water and benefits depending on where you go:
Sulfur Springs (Iou-sen): Milky white, promotes circulation, eases joint pain, and has antibacterial properties.
Sodium Chloride Springs (Shokabutsu-sen): Retains body heat, soothes fatigue, and heals skin conditions.
Carbonate Springs (Tansan-sen): Bubbly, improves circulation, lowers blood pressure, and softens skin.
Iron Springs (Tetsu-sen): Reddish-brown, warms deeply, and helps with anemia.
Alkaline Simple Springs (Tanjun-sen): Clear, gentle, smooths and moisturizes skin; great for sensitive skin.
Sulfuric Acid Springs (Ryūsan-en): Clear or yellowish, promotes skin regeneration and reduces high blood pressure.
I was obsessed with trying a black egg from the Owakudani Valley, which is said to add seven years to your life. The eggs are boiled in the hot springs so they are rich in sulfur and iron and they turn black due to the minerals in the water.
Tasty treat for the train ride back to Tokyo!