Kobayashi Pharmaceutical
Kobayashi Pharmaceutical Soft Interdental Brush (I-Shape SSS-S), 20 Pieces
Kobayashi Pharmaceutical Soft Interdental Brush (I-Shape SSS-S), 20 Pieces
Rated 5.6 out of 7.0 by Japan’s largest beauty community
A rubber interdental brush that does not use wires and is gentle on the gums.
✓ 100% AUTHENTIC, SHIPS FROM JAPAN
✓ DUTIES & TAXES INCLUDED FOR US ORDERS
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What it is
A rubber-type interdental brush that is gentle on the gums and does not use wires. The ultra-fine tip and elastic rubber brush fit smoothly between any teeth, massaging the gums. SSSS size for narrow spaces that previously could not be reached.
Ingredients
How to use
(1) Remove one interdental brush and use it. (2) While looking in the mirror, slowly insert the brush vertically between your teeth, being careful not to damage your gums, and clean with small, back-and-forth movements. For hygienic and functional reasons, we recommend using one brush per tooth. If the spaces between your teeth are narrow and it is difficult to insert the brush, use dental floss.
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.