SUBSCRIBE NOW Kusatsu Onsen Box- Autumn
Experience Japan's most renowned
hot spring for healing and relaxation
Naturally sourced from Japan’s top hot spring with the highest natural flow rate!
This autumn, bring the healing essence of Kusatsu into your home with Onsen Box. Crafted from Kusatsu’s renowned waters, our products offer a unique touch of tradition and rejuvenation, perfect for enhancing your fall self-care routine.
Discover the Treasures within the Hakone OnsenBox
Onsen Additives
Tap to see moreHealing Collections
Tap to see moreLocal Delights
Tap to see moreJapanese Teas
Tap to see moreSpecial Items
Tap to see more
Onsen Additives
Various types of bath additives made with authentic Kusatsu Onsen water.
Product
Bath Additive
Features
Kusatsu Onsen Water, Sulfur Aroma, Herbal Bath, Effervescent Bath Additive
Use
Add 1 bag to hot water (approx. 200L) in the bathtub
Healing Collections
Natural Hinoki Essential Oil & Hinoki Branch Aroma Diffuser
Product
Hinoki Essential Oil & Aroma Diffuser
Fragrance
A gentle and soothing wood scent
Benefits
Calming and Nerve Tonic. Natural Hinoki contains a balanced blend of both monoterpenes and sesquiterpenes, allowing you to experience both refreshing and relaxing effects simultaneously.
Local Delights
Onsen Senbei ”Isobe Senbei”
Product
Onsen Confectionery
Feature
A soft, mildly sweet senbei (rice cracker) made with wheat flour and baked using the mineral-rich water from Isobe Onsen.
Flavor
Baked with carbonated mineral spring water, these senbei have a soft, melt-in-your-mouth texture and a subtle mineral aroma from the hot spring.
Japanese Teas
Additive-free, pesticide-free healthy mulberry tea
Product
Additive-free, pesticide-free mulberry tea (Green tea type / Roasted tea type)
Taste
Helps prevent diabetes, regulate high blood pressure, reduce blood lipid levels, improve bowel movements, and normalize gut health.
Benefits
Helps prevent diabetes, regulate high blood pressure, reduce blood lipid levels, improve bowel movements, and normalize gut health.
Special Items
Kusatsu Onsen Exclusive Specialties
Product
Kusatsu Onsen Original Towel & Specialties
Features
Kusatsu Onsen Limited Edition
Use
Enjoy the surprise when it arrives!
Kusatsu: Land of Healing Waters and Rejuvenation
Discover Kusatsu: Revered for centuries as
Japan’s premier hot spring haven.
Set amidst the mountains, Kusatsu offers not
only powerful healing waters but also a rich
tapestry of tradition and natural beauty.
With abundant springs known for their unique
acidity, find rejuvenation in Kusatsu’s mineral-
rich baths. Experience the ultimate blend of
wellness and nature in Japan’s legendary
onsen town!
Top 10 Chilling Things to Do in Kusatsu Onsen
- Experience the 6 Different Unique Mineral Qualities of Kusatsu’s Springs
- Stroll Through the Yubatake (Hot Water Field)
- Discover Free Local Public Baths
- Soak in the Vast Open-Air Bath at Nishi-no-Kawara Onsen Amidst Autumn Colors.
- Immerse Yourself in Onsen Culture with a Yumomi and Dance Show
- Meditate at Shiranesan Shrine and Stargaze
- Explore the Majestic Mt. Kusatsu-Shirane
- Travel the Highest Point on Route 292 at Shibu-toge
- Enjoy the World’s First Monkey Hot Water Stirring Show
- Wander Through Kusatsu Onsen’s Historic Streets and Buildings
Discover Kusatsu Onsen: Japan’s Legendary Healing Springs
Nature's Remedy Unveiled Since 1193 AD
famed for curing everything but lovesickness. Its acidic springs are renowned for
soothing skin, easing joint pain, and enhancing overall wellness. Experience one of
Japan’s top three hot springs.
Kusatsu Onsen's Spring Types and Their Benefits
Kusatsu Onsen spring type:
Acidic Sulfurous Aluminum Sulfate and Chloride Hot SpringKusatsu Onsen: A Haven for Natural Hot Spring Therapy
“People from all over Japan and the world come to Kusatsu Onsen to heal their
ailments. The hot spring therapy known as "toji" (long-term hot spring treatment) is
famous, and many visitors stay for extended periods for their recovery.”
Natural Flow: The "Yubatake" (hot water field) in the town center has been
continuously producing hot spring water for nearly 1,000 years. It boasts the highest
natural flow in Japan, with over 32,000 liters of hot spring water per minute—
equivalent to about 230,000 oil drums each day.
Acidity: Kusatsu Onsen's water is highly acidic, with a pH level of 2.1. This makes it
one of Japan's most acidic hot springs.
Sterilizing Effect: Due to its strong acidity (pH 1.6-2.1), most bacteria and germs
cannot survive in Kusatsu's waters, making it highly effective for sterilization.
Health Benefits: The strong antibacterial properties of Kusatsu Onsen are beneficial
for wounds, chronic skin diseases, and neuralgia.
| Kusatsu Onsen | Spring Type | Efficient |
|---|---|---|
| Simple hot springs | Family-friendly： Gentle for both seniors and children | |
| Alkaline simple hot springs | Skin-Enhancing Effects | |
| Chloride springs | Resistant to Cooling | |
| Antimicrobial Effect of Saltwater | ||
| Hydrogen carbonate springs | Skin-Enhancing, Refreshing Sensation | |
| Sulfate springs | Healing Wounds, Effectiveness Against Stroke | |
| Carbon dioxide springs | Heart-Healthy | |
| Iron-containing springs | Relieves anemia, menstrual disorders, and menopausal symptoms in women. | |
| ◯ | Sulfur springs | Effective for lifestyle diseases： high blood sugar, arteriosclerosis, hypertension |
| ◯ | Acidic springs | Antibacterial for Skin Conditions |
| Radioactive springs | Gout-Relief and Panacea Springs |
Experience Onsen - Movie & Article
Meet the local artisans from Onsen Village
The Onsen Box includes the following contents Contents may vary slightly depending on the hot spring location.
15 Authentic Onsen Delights from Japan
( Value over $ 200 )
• Onsen Bath Powder x 1
• Local Onsen Bath Salt x 1
• Premium Onsen Ryokan Bath Salt x 1
• Herbal Bath Additive x 1
• 100% Natural Hot Spring Mineral Deposit Additives x 1
• Sulfur Spring Set (Onsen Bath Powder x 1 / 100% Natural Hot Spring Mineral Deposit x 1 / Fine Himalayan Salt x 1)
• Onsen Soap x 1
• Local Organic Aroma or Precious onsen-related goods x 1
• Steam Eye Mask or Relaxing Foot Sap Power Foot Sheet x 1
• Traditional Onsen Snack & Candy x 3
• Japanese Superfood x 1
• Premium Local Organic Tea x 1
• Traditional Onsen Folk Crafts or Gift x 2
and more special gifts!!OnsenBox Subscription
Choose Your Plan
Total plus shipping fee calculated at checkout. All prices in USD
Our Monthly OnsenBox Experience
The OnsenBox is curated by onsen concierge,delivering exclusive local bath additives and local specialties that can only be found in hot spring areas across Japan, right to your doorstep every month.
Onsen Additives
Onsen Additives: Experience the essence of Japanese hot springs with Onsen Harvest's original bath additives, including Onsen Powder, as well as rare bath salts and various additives sourced directly from local hot spring areas.
Healing Collections
Healing items beloved by Japanese people, including herbal water and aromatherapy oils born from the abundant nature of hot spring areas. Enjoy these healing items to soothe fatigue and promote relaxation.
Local Delights
Explore the confectionery haven of hot spring areas, where we deliver exclusive sweets ranging from nutritious superfoods to traditional Japanese sweets that are difficult to find elsewhere.
Japanese Teas
Enjoy an array of teas sourced from local tea plantations, featuring premium Japanese green tea and herbal teas cultivated in Japanese forests, each offering distinct health benefits.
Special Items
Receive special items that are exclusive to hot spring areas, including traditional handicrafts and power items from hot spring shrines, ensuring you experience the unique essence of these locations firsthand.
Past Seasons
