The common answer for how long you should soak in a hot spring is usually 10 to 20 minutes.
What does soaking in hot springs do?
Soaking in hot springs can be a great way to naturally detox your skin. Thanks to the high amount of silica in the water, it can also soften rough or dry skin. Plus, the mineral content of sulfur springs has been shown to help persisting skin conditions like psoriasis, acne and eczema.
Why do people put towels on their heads in onsen?
Quite simply, bathers in Japanese onsen (hot spring baths) place towels on their heads because its a convenient place to put them. Upon entering an onsen establishment, the towel is used as a washcloth to thoroughly scrub the body clean before entering the communal bathing water of the hot spring.
Why do Japanese put towels on their heads?
Ishii: If you really want to soak in the Japanese atmosphere, wrap it around your head! Since the towel is still moist with cool water, it will help to prevent blood from rushing to your head as you lower yourself into the onsen.