Hot Springs for Beautiful Skin | Bicarbonate, Chloride & Sulfate Springs Explained

This private source gushes in the Kitahama district, part of Japan's premier onsen resort, Beppu, overlooking the bay. Located in an area that has long flourished as an entertainment district, this spring has soothed countless travelers. Combining the qualities of a bicarbonate and a chloride spring, its waters gently exfoliate the skin while a veil of salt locks in moisture. After bathing, you can enjoy a unique texture that is both silky and deeply hydrated. It is a renowned spring perfect for releasing mind and body while feeling the Beppu sea breeze.

This is a newly drilled source in the Yufuin Onsen area, which boasts one of the largest outputs in Japan. Nestled at the foot of Mt. Yufu, this hot spring resort has long been cherished for therapeutic bathing. The AMBER Yufuin source features a high alkalinity of pH 8.9, combining the qualities of a bicarbonate spring that smooths the skin by removing old keratin, and a chloride spring that helps retain body heat. It is particularly characterized by its abundance of metasilicic acid, a natural moisturizing component.

Pumped from 1,000 meters beneath the Kuju Highlands in Aso-Kuju National Park, the Tenku no Daichi Kuju Kogen Hotel source is a true all-star spring, combining the properties of chloride, sulfate, and bicarbonate waters. Rich in metasilicic acid, a natural moisturizer, it leaves skin feeling smooth during the bath and wonderfully soft afterward. It's perfect for days when you want to deeply soothe body and soul while gazing at the majestic nature of the Kuju mountain range and Mount Aso.

Found near the Saga Yamato Interchange, "Yamato no Yu" stands as one of Kyushu's premier high-concentration carbonated springs. This source boasts an impressive 1600mg/kg of carbon dioxide gas, significantly surpassing the legal definition for a carbon dioxide spring of 1000mg/kg. Fresh, pump-lifted water is directly supplied, ensuring its purity. As you immerse yourself in the lukewarm bath, countless silver bubbles envelop your skin, their gentle effervescence stimulating circulation throughout your body. It's an ideal hot spring for those seeking deep relaxation and rejuvenation for both mind and body.

Gushing in the Kitahama area, the heart of the Beppu Onsen region renowned for Japan's largest hot spring output, this private source has a rich history. The area flourished as an entertainment district for therapeutic bathers since a regular sea route to Osaka was established in the Meiji era. The Beppu Onsen Hotel Koraku source is uniquely characterized by its dual nature as both a bicarbonate and a chloride spring. Steeping in its waters gently exfoliates the skin while a fine veil of salt locks in moisture, leaving you with a silky feel and a restorative warmth that lingers long after your bath.

Nestled quietly in the mountainous region of Toyama Prefecture, Ogawa Onsen gushes forth. This naturally gushing spring, cherished by locals for generations, delivers the pure blessings of the earth. Its mild, neutral waters gently embrace the body, while a subtle veil of salt ensures a restorative warmth that lingers. Guests will also experience the benefit of silky skin, feeling remarkably light and refreshed after their soak. It is highly recommended for those seeking deep relaxation from daily fatigue, and those desiring gentle comfort for cold sensitivity or gastrointestinal discomfort.

This private source, Kusunoyu, gushes forth in the Beppu Onsen area, one of the eight springs of Beppu. While its name is associated with the historic "Kusunoki Onsen" public bath dating back to the Kamakura period, that bathhouse is now closed. This source features a balanced blend of skin-smoothing bicarbonate ions and core-warming chloride ions at a gentle pH of 8.2. As you steep in its waters, the slightly viscous texture envelops your skin, leaving it feeling moisturized and restoratively warm long after you emerge. It is perfect for those seeking to unwind both body and soul in a historic spa town.

Nestled at the foot of the Northern Alps in Okuhida Onsen-go, 'Fuku no Yu' (Spring of Fortune) is a blessed hot spring said to bring good fortune to its visitors. With a gentle, skin-friendly neutral pH of 7.2, its abundant bicarbonate ions wash away old skin cells, leaving your skin smooth to the touch. As you immerse yourself in the water, you'll feel the hustle and bustle of daily life fade away, accompanied by a faint scent of sulfur. This calm and pure spring embraces all who wish to reset their mind and body and gain new vitality.

Kowakidani Onsen, once known as 'Kojigoku' (Small Hell) due to its fumaroles, was renamed in 1873 following Emperor Meiji's visit. This mixed spring, combining multiple sources developed since the late Meiji era, stands as one of Hakone's most iconic hot springs. Its waters envelop the skin in a comforting salt veil, delivering restorative warmth deep into the body's core. This mellow, historically rich spring is highly recommended for those seeking deep relaxation and a profound reset from daily life.

A new 'Wa-modern' current emerged in Noboribetsu Onsen's history in 2006. This distinctive spring, with its faintly fragrant sulfur, evokes a sense of travel, while its chloride and sulfate composition gently infuses the skin with rich warmth. The heat gradually permeates the body's core, offering a pleasant restorative warmth that endures post-bath. It is perfectly suited for those desiring deep relaxation for mind and body in a sophisticated ambiance, far from daily clamor.

Discovered in 1992, Kumihama Onsen, drilled from 1500m underground, emerges in the scenic Kumihama Bay area of northern Kyoto Prefecture, facing the Sea of Japan. Its colorless, transparent, and mild waters are renowned for a gentle, skin-enveloping veil of salt. This unique quality delivers restorative warmth deep into the body's core, ensuring a lasting sense of comfort long after you leave the bath. It's an ideal retreat for those seeking deep relaxation and a profound escape from daily life amidst stunning rias coastlines.

This source, naturally gushing 200 liters per minute from the Toyohira River riverbed in Jozankei Onsen town, began supplying surrounding hot spring facilities in 1997, named after its founder, Jozan Miizumi. Its colorless, clear waters, with a faint hint of sulfur, are characterized by a gentle salt veil that envelops the skin. The heat slowly penetrates to the body's core, providing restorative warmth that lingers long after bathing. It is a renowned spring offering deep relaxation for those seeking to escape daily hustle and warm their mind and body.

Since its discovery in 1866 by the ascetic monk Miizumi Jozan, Jozankei Onsen has been cherished as Sapporo's secluded hot spring retreat. Its springs, naturally gushing approximately 8,600 liters per minute from the riverbed near Tsukimibashi and Takayamabashi on the Toyohira River, are colorless, clear, and possess a subtly salty taste. This water envelops the skin like a delicate veil of salt, delivering restorative warmth deep into the body's core. It is highly recommended for those seeking deep relaxation and liberation of mind and body, away from urban clamor, while immersed in the valley's changing seasons.

The waters of Jozankei Onsen, Sapporo's secluded retreat opened by the mountain ascetic Miizumi Jozan, are characterized by their smooth texture that gently envelops the skin. Drawn by pump-lifted methods, these therapeutic waters create a "salt veil" that thoroughly warms the body to its core, providing restorative warmth that lingers long after your bath. It's an ideal escape for those seeking deep relaxation for mind and body, allowing one to reflect on Jozankei's pristine landscapes away from the daily hustle.

This ANA InterContinental Beppu Resort & Spa Tsuboyu Gensen source was developed using modern drilling techniques on a highland overlooking the historic, steam-filled streets of Kannawa, Beppu, a renowned therapeutic bathing area since the Kamakura period. A key feature is the dissolved salt, which gently envelops the skin to provide long-lasting warmth after bathing. It offers a moment of deep release for those seeking to connect with Beppu's magnificent nature.

Gora Onsen is a unique "steam-created spring," established in the early Showa period, born from the reaction between volcanic steam from Owakudani and water from Sengokuhara. This blessing embodies the fusion of Hakone's natural power and human ingenuity. A gentle salt veil envelops the skin, delivering heat deep into the body's core, ensuring restorative warmth that lingers long after your bath. It's the perfect spring to soothe the fatigue of an active day and quietly replenish your vitality for tomorrow.

Onsenmura No. 114, a chloride spring drawn from approximately 100 meters underground at Miyanoshita Onsen—one of Hakone's renowned Seven Hot Springs—carries a rich history. This area flourished as a therapeutic hot spring resort since the Edo period, evolving into an international destination during the Meiji era. The spring's unique feature is its gentle embrace, forming a 'salt veil' on the skin that slowly warms the body from its core. The restorative warmth lingers long after your bath, promoting deep relaxation for both mind and body. It is highly recommended for those seeking to soothe daily fatigue while immersing themselves in history.

The Mandaiko source, originating from traces of past mining development, is deeply intertwined with Kusatsu Onsen's unique yumomi culture and its long history of toji (therapeutic bathing). Its highly acidic waters, among Japan's most potent, deliver a distinctive tingling sensation, awakening both mind and body and offering a sense of rejuvenation. The high-temperature blessings penetrate deep into the core, leaving you with a surprisingly light and refreshed feeling after your bath. We invite those seeking a genuine toji experience, a true escape from daily life to restore their mind and body, to discover the profound power of this spring.

The Mandaiko source, originating from traces of past mining development, is deeply intertwined with Kusatsu Onsen's unique yumomi culture and its long history of toji (therapeutic bathing). Its highly acidic waters, among Japan's most potent, deliver a distinctive tingling sensation, awakening both mind and body and offering a sense of rejuvenation. The high-temperature blessings penetrate deep into the core, leaving you with a surprisingly light and refreshed feeling after your bath. We invite those seeking a genuine toji experience, a true escape from daily life to restore their mind and body, to discover the profound power of this spring.

The Kowakien Kyokyu Onsen is a steam-generated spring developed since 1949 to supply the Hakone Kowakien resort area. It utilizes geothermal heat from former fumarolic activity along the Kurumazawa stream, a tributary of the Jakotsu River, blending multiple sources and natural spring water. This source is widely distributed to the various facilities of the Hakone Kowakien resort, operated by Fujita Kanko, forming the foundation of the entire resort.

Housen-no-Yu, a precious spring at Kusatsu Onsen, one of Japan's three most famous hot springs, has naturally gushed from bedrock for approximately 1200 years. Distinct from major sources like Yubatake and Bandaiko, this rare water gently envelops the skin with its sulfurous aroma. Its crisp quality offers a sensation of purifying both mind and body. After bathing, your skin will feel wonderfully silky, and the restorative warmth from deep within will invite deep relaxation, supporting overall rejuvenation. It is highly recommended for those seeking to escape daily life and reset themselves with a truly special hot spring experience.

This precious hot spring emerges from deep underground in Shijo Kawaramachi, Kyoto's premier downtown district. Its hypertonic chloride spring water, with a richness akin to the blessings of the sea, gently envelops the skin, providing a restorative warmth that lingers long after bathing. It offers a deep relaxation, helping travelers forget the city's hustle and gently soothe bodies tired from exploration. This spring is highly recommended for active travelers seeking authentic healing conveniently located in the heart of the ancient capital.

Gokuraku Gensen is a source for the iconic "Kinsen" (gold spring) of Arima Onsen, one of Japan's three ancient hot springs. It was once called "Negai no Yu" (Spring of Wishes) and its history is tied to Toyotomi Hideyoshi, who had its waters channeled to his private bathhouse. The rich water, which turns a reddish-brown when exposed to air, has been cherished by therapeutic bathers for centuries. Its high salt concentration envelops the skin, providing long-lasting warmth after bathing. Steeping in this historic spring, you can feel the deep warmth that once soothed samurai warlords, offering a true escape from daily fatigue.

Tsurumaki Onsen's non-volcanic waters, first utilized for bathing in 1889 after well water proved undrinkable, emerge from deep within the Tanzawa Mountains. This spring is a national rarity, exceptionally rich in calcium, gently enveloping the skin. Its restorative warmth penetrates the body's core, fostering deep relaxation and a lasting gentle glow post-bath. Following its history as 'Tokyo's inner parlor,' bustling with therapeutic bathers after the Odakyu Line opened in the early Showa era, it remains ideal for tranquil self-care away from urban clamor.

The Bandaiko source, which unexpectedly erupted from within the Bandai Sulfur Mine in 1970, now stands as Kusatsu's primary hot spring, boasting the largest output and supporting the town. Named with the wish for 'eternal prosperity' (万代), this powerful source was born in the mountains, far from the Yubatake (Kusatsu's central hot-water field). Its colorless, transparent waters deliver a stimulating tingle that awakens both mind and body, while its robust warmth permeates to the very core. This energetic spring is a perfect companion for those seeking liberation from daily routines and a crisp mental and physical rejuvenation.

This specific spring, pump-lifted from the underground of Higashi 3-chome in Jozankei Onsen—Sapporo's tranquil retreat—has been affectionately known since ancient times as 'Atsu no Yu,' or the 'Hot Water Spring.' Its unique salt components form a delicate veil on the skin, providing a restorative warmth that gently permeates the body's core. The comforting heat continues long after your bath, aiding in deep relaxation and relieving daily tension. It's a soothing haven for those wishing to escape urban hustle and achieve a profound sense of rejuvenation.

This unique created hot spring utilizes the fumaroles of Owakudani, which were formed by volcanic activity approximately 3000 years ago. In the early Showa period, Hakone Onsen Kyokyu Co., Ltd. developed this source to supply hot water to areas like Sengokuhara and Gora. The water, created by mixing volcanic gas and water, offers a distinct, tingling, and tightening sensation upon contact with the skin. The powerful energy from the earth delivers restorative warmth deep into the body, a warmth that lingers long after your bath. It is ideal for those seeking deep relaxation and rejuvenation, wishing to refresh their mind and body.

The Yubatake source, naturally gushing from Kusatsu Onsen's iconic Yubatake (Kusatsu's central hot-water field), holds a distinguished history. During the Edo period, it was ranked as the highest-ranking Ozeki in the Onsen Banzuke, recognized alongside the Shirahata source as one of Kusatsu's two major hot springs. Its powerful, pH2 water, permeated with a sulfurous aroma, imparts a refreshing, tightening sensation upon the skin. A soak in this historic, renowned hot spring cleanses the body and mind, offering deep relaxation and rejuvenation from daily fatigue. It is a must-visit for those seeking to feel the energy of a historic hot spring and desire a complete refresh.

The New Heartopia Onsen, located in Nagashima-cho, Kuwana City, Mie Prefecture, an area famous for Nagashima Resort, is sourced from deep underground through drilling and pump-lifting. Its soft, saline waters create a delicate veil on the skin, gently warming the body from its core. The restorative warmth lingers long after bathing, offering deep relaxation for both mind and body. This spring provides a soothing embrace for those seeking profound tranquility after a day of enjoyment in this vibrant leisure destination.

Hakone Yumoto Onsen's history is said to date back to the Nara period, making it Hakone's oldest hot spring village. [2, 4] The Hakone no Yu Kamon source is a private spring drilled in this historic land. This sodium/calcium-chloride/sulfate spring follows in the tradition of famous waters once presented to the Shogun's family during the Edo period. [10] Its waters gently envelop the skin, providing a characteristic warmth that lingers long after bathing. It is recommended for those seeking to release mind and body in historic, nature-rich Hakone.

This is one of the most well-known sources in Noboribetsu, a leading onsen destination in Hokkaido. It continuously flows at a high temperature of 96.5°C, embodying the raw power of the earth. The highly acidic water, with a pH of 2.2, provides a tingling sensation on the skin and a refreshing feeling after bathing. Its rich iron and sulfate content offers a powerful bathing experience that feels as if it's awakening both mind and body. It's a spring for those who wish to reset from daily fatigue, gain new vitality, and feel nature's energy throughout their entire being.

This is a representative 'Kinsen' (golden spring) of Arima Onsen, one of Japan's three ancient hot springs. Rich in iron and salt, its waters turn a distinctive reddish-brown upon contact with air. These dense minerals provide deep, lasting warmth, while a salt veil on the skin helps retain moisture, leaving it feeling smooth. Perfect for those struggling with chronic fatigue or poor circulation, or anyone seeking to refresh mind and body. It supports those wishing to regain vitality through the power of its potent waters.

This rare, naturally gushing source emerges from beneath 'Gensenkaku,' nestled beside Kusatsu Onsen's iconic Yubatake (Kusatsu's central hot-water field). Despite its strong acidity, its waters offer a remarkably soft bathing sensation, akin to being enveloped in silk floss. The milky-white waters, renowned for having Kusatsu's finest 'yunohana' (hot spring minerals), gently embrace the skin, contributing to silky skin and providing a restorative warmth that lingers deep within the body. Known as a 'phantom spring' for its history of disappearing once during the Taisho era, it now offers a profound escape from daily life, inviting deep relaxation and rejuvenation.

This Radon-sen No. 1 source plays a key role as one of the "Ginsen" (Silver Springs) that color the history of Arima Onsen, one of Japan's three ancient hot springs. In contrast to the reddish-brown "Kinsen" containing iron, Ginsen is characterized by its clear, smooth feel. The water from this source is said to gently stimulate cells and vitalize the body as it's absorbed through breathing.

Originating from the dramatic Jigokudani (Hell Valley), the potent waters of Noboribetsu Onsen, a renowned hot spring resort in Hokkaido, have long welcomed those seeking therapeutic benefits. This powerful spring gently envelops the skin, delivering restorative warmth that penetrates deep into the body's core. The comforting heat lingers long after bathing, promoting deep relaxation and offering respite from the stresses of daily life. It is highly recommended for individuals desiring an authentic balneotherapy experience in Japan's northern frontier.

The Mandaiko source, originating from traces of past mining development, is deeply intertwined with Kusatsu Onsen's unique yumomi culture and its long history of toji (therapeutic bathing). Its highly acidic waters, among Japan's most potent, deliver a distinctive tingling sensation, awakening both mind and body and offering a sense of rejuvenation. The high-temperature blessings penetrate deep into the core, leaving you with a surprisingly light and refreshed feeling after your bath. We invite those seeking a genuine toji experience, a true escape from daily life to restore their mind and body, to discover the profound power of this spring.

Nestled in the Hakone Yumoto area, Yumoto Onsen (a blend of sources No. 12, 72, 84, 89, 99, and 112) is a luxurious fusion of six distinct springs. It symbolizes the abundant water volume of Yumoto, which historically thrived as one of the ancient Hakone Seven Hot Springs. The chloride spring water, enveloping the skin like a delicate veil, delivers restorative warmth deep into the body's core. The lingering, cozy sensation after bathing gently promotes deep relaxation, easing away daily fatigue. This spring is recommended for those seeking to deeply warm their body and mind and indulge in tranquil moments.

Naturally gushing from the riverbed and banks of the Toyohira River, which flows through the heart of Jozankei Onsen, this source's waters are collected without mechanical pumps. Its pristine freshness, embodying the earth's blessings, is truly captivating. A gentle, saline veil envelops the skin, delivering restorative warmth deep into the body's core, ensuring a blissful, lasting afterglow. It's an invitation for those who yearn to be embraced by nature's vigor and experience deep relaxation from the depths of their mind and body.

With a history stretching back to the Meiji era, Hoshi Onsen's "Asahi no Yu" source is a natural gift, bubbling up directly from the earth. The alkaline water, with a pH of 8.5, is gentle on the skin, while the perfect 41.5°C temperature slowly melts away physical and mental tension. The warming effects of the sulfate spring provide lasting warmth long after you leave the bath. This onsen embraces those seeking to forget daily clamor, reconnect with themselves in tranquility, and reset mind and body amidst history and nature.

Nestled along the Tone River, Yujuku Onsen has been a beloved hot spring in a quiet post town, cherished by travelers and literati since the Edo period. Its waters, smooth as silk, envelop the skin in a veil of moisture, offering a truly silky skin experience. This restorative warmth penetrates deep into the body's core, gently releasing daily tensions and promoting deep relaxation. It is a renowned spring for those seeking rejuvenation and a peaceful recuperation amidst the tranquil mountain scenery, with its comforting warmth lingering long after bathing.