Shoyou
Shoyo Shoyo Liquid Mouthwash, 330ml
Shoyo Shoyo Liquid Mouthwash, 330ml
Rated 5.0 out of 7.0 by Japan’s largest beauty community
A medicated dental rinse containing five naturally derived ingredients.
✓ 100% AUTHENTIC, SHIPS FROM JAPAN
✓ DUTIES & TAXES INCLUDED FOR US ORDERS
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What it is
A dental rinse that penetrates deep into your mouth to prevent periodontal disease.Contains five natural plant-derived ingredients.Contains hinokitiol (a synthetic ingredient containing hiba) and dipotassium glycyrrhizinate (a licorice-derived ingredient).Contains soapberry extract (a natural cleansing ingredient), peony extract, and angelica extract (a firming ingredient).A refreshing herbal mint type.
Ingredients
(Solvent) Purified water, ethanol (humectant), concentrated glycerin (solvent), polyoxyethylene hydrogenated castor oil (flavoring agent), fragrance (herbal mint type), (stabilizer) 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, disodium edetate, stearyl glycyrrhetinate (medicinal ingredient), dipotassium glycyrrhizinate, hinokitiol (cleansing agent), soapberry extract (astringent), angelica extract, peony extract (preservative), parahydroxybenzoic acid ester (cooling agent), L-menthol
How to use
When using, put an appropriate amount in your mouth and brush your teeth and gums. * Recommended amount: 10ml (see the line inside the cap). *Hold the amount in your mouth for approximately 20 seconds.
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.