BARTH
BARTH Neutral Bicarbonate Bath Tablet Trial Set
BARTH Neutral Bicarbonate Bath Tablet Trial Set
Rated 5.1 out of 7.0 by Japan’s largest beauty community
Three types of neutral bicarbonate bath tablets to choose from depending on your mood.
✓ 100% AUTHENTIC, SHIPS FROM JAPAN
✓ DUTIES & TAXES INCLUDED FOR US ORDERS
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What it is
[Set Contents] ・ Medicinal BARTH Neutral Bicarbonate Bath Additive (Product Name: BARTH Tablet Bath Additive [Quasi-drug]) 3 tablets (1 serving) ・ BARTH Neutral Bicarbonate Bath Additive BEAUTY 3 tablets (1 serving) ・ Medicinal BARTH Neutral Bicarbonate Bath Additive RELAX Lavender Fog (Product Name: BARTH Tablet Bath Additive Relax BL [Quasi-drug]) 3 tablets (1 serving) [Medicinal BARTH Neutral Bicarbonate Bath Additive] A neutral bicarbonate* bath additive inspired by the rare "neutral bicarbonate spring" of Germany. The bath water, rich in bicarbonate ions*, promotes blood circulation through its warming effect, and is expected to be effective in relieving fatigue, stiff shoulders, lower back pain, and cold sensitivity. Take a bicarbonate* bath that warms your body to the core to relieve the day's fatigue and prepare yourself for sleep. *Active ingredients: Sodium bicarbonate, sodium carbonate [BARTH Neutral Bicarbonate Bath Additive BEAUTY] While maintaining the technology to keep bicarbonate ions*1 dissolved in the bathwater for a long time, we have created a bath additive that contains beauty moisturizing ingredients (collagen, hyaluronic acid). The bathwater feels like a beauty serum and envelops your whole body, giving your skin moisture and firmness. Your usual bath time will be elevated to "15 minutes*2 to prepare your skin." *1 Base: Sodium bicarbonate, sodium carbonate *2 Recommended bath time [Medicinal BARTH Neutral Bicarbonate Bath Additive RELAX Lavender Fog] A gentle fragrance is new. This bath additive combines the warming effect of bicarbonate ions* with a fragrance that is perfect before going to sleep. The gentle lavender scent envelops you like a soft fog. *Active ingredients: Sodium bicarbonate, sodium carbonate How to use [How to use BARTH Medicated Neutral Bicarbonate Bath Additive] Add approximately 3 tablets to lukewarm water (160L) at 37-40℃ and bathe after they have completely dissolved. Soak in the bath for at least 15 minutes. [How to use BARTH Neutral Bicarbonate Bath Additive BEAUTY] Add approximately 3 tablets to lukewarm water (160L) at 37-40℃ and bathe after they have completely dissolved. Soak in the bath for at least 15 minutes. If you soak your head completely and gently massage your scalp, you can enjoy a refreshing scalp feeling like you're having a head spa at home. The mild water, which contains beauty moisturizing ingredients, is also recommended for washing your face. [How to use BARTH Medicated Neutral Bicarbonate Bath Additive RELAX Lavender Fog] Add approximately 3 tablets to lukewarm water (160L) at 37-40℃ and bathe after they have completely dissolved. Soak in the bath for at least 15 minutes.
Ingredients
How to use
[How to use BARTH Medicated Neutral Bicarbonate Bath Additive] Add approximately 3 tablets to lukewarm water (160L) at 37-40℃ and bathe after they have completely dissolved. Soak in the bath for at least 15 minutes. [How to use BARTH Neutral Bicarbonate Bath Additive BEAUTY] Add approximately 3 tablets to lukewarm water (160L) at 37-40℃ and bathe after they have completely dissolved. Soak in the bath for at least 15 minutes. Immerse yourself completely, including your head, and gently massage your scalp for a refreshing, at-home head spa experience. The mild water, infused with beauty and moisturizing ingredients, is also recommended for washing your face. [How to use BARTH Medicated Neutral Bicarbonate Bath Additive RELAX Lavender Fog] Add approximately 3 tablets to lukewarm water (160L) at 37-40℃ and bathe after they have completely dissolved.・Soak in the hot water for at least 15 minutes.
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.