Hanayama Onsen Yakushi no Yu
Kazan Onsen Yakushi no Yu Carbonated Bath Tablet, 2 Pieces
Kazan Onsen Yakushi no Yu Carbonated Bath Tablet, 2 Pieces
Rated 4.9 out of 7.0 by Japan’s largest beauty community
Authentic bath additives made by a hot spring inn
✓ 100% AUTHENTIC, SHIPS FROM JAPAN
✓ DUTIES & TAXES INCLUDED FOR US ORDERS
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What it is
Hanayama Onsen - Yakushi no Yu - is a hot spring known for its high carbon dioxide content, said to be the strongest in the Kansai region. It contains 2631mg of carbon dioxide gas, and the hot spring gushes forth under the pressure of the carbon dioxide gas alone! Many people make long-term stays here as a "therapeutic hot spring resort" to experience the benefits of the carbonated spring. This product is a special carbonated tablet created to replicate the effects of Hanayama Onsen's carbonated spring, said to be the strongest in the Kansai region, and is characterized by its overwhelmingly higher carbon dioxide content compared to regular bath additives. [Benefits] Relief from fatigue, stiff shoulders, lower back pain, sensitivity to cold, neuralgia, rheumatism, rough skin, heat rash, eczema, chilblains, cracks, chapped skin, acne, hemorrhoids, sprains, bruises, sensitivity to cold before and after childbirth, etc. (Quasi-drug)
Ingredients
How to use
Use one tablet (40g) of this product for every 160-200L of hot water in the bathtub. Add this product after filling the bathtub with hot water. Stir well to completely dissolve before use. Carbon dioxide gas remains dissolved in the water even after the fizz has stopped, but it is most effective if added within two hours.
We ship internationally from Japan!
Frequently Asked Questions
Is this authentic?
Yes. We only buy from official retailers and directly from the brands here in Japan. Never resellers, never grey market stock.
We are beauty lovers too, so we know the worry, especially with something you are putting on your face. Authenticity is 100% guaranteed by us.
What are your shipping rates?
On orders under US$75, shipping is a flat US$20 to the United States and US$10 to all other countries.
Orders of US$75 or more ship free, applied automatically at checkout. Your exact shipping cost is shown before you pay.
How long does delivery take?
These estimates are for International Airmail (Tracked) and include 3 to 5 business days of processing in Japan.
- United States: 12 to 15 business days
- Canada, United Kingdom, France, Germany: 9 to 12 business days
- Australia, New Zealand, Denmark, Finland, India, Indonesia, Italy, Netherlands, Spain, Sweden, Switzerland: 10 to 13 business days
- China, Hong Kong, Malaysia, Singapore, South Korea, Taiwan, Thailand, Vietnam: 8 to 10 business days
- Rest of the world: 11 to 18 business days
Actual delivery can be affected by customs clearance, seasonal congestion, or carrier delays in the destination country, all of which are outside our control.
Do you offer express shipping?
Yes. As of 22 July 2026, we offer International Express Mail through Japan Post. The cost is based on order weight and is calculated automatically at checkout.
Will I pay customs or import fees?
US orders: No. As of July 1, 2026, all US orders ship DDP (duties delivered prepaid), meaning we prepay all import duties on our end. Nothing is due at your door.
Orders outside the US: Possibly. Duties and import taxes are set by your local customs authority and are not collected at checkout, so any charges on delivery are your responsibility.
We're working on rolling out prepaid duties for more countries soon.