BARTH
BARTH Neutral Bicarbonate Bath BEAUTY, 9 Tablets (3 Uses)
BARTH Neutral Bicarbonate Bath BEAUTY, 9 Tablets (3 Uses)
@cosme rating: 5.0/7.0
Tone your skin in 15 minutes*1
✓ 100% authentic
✓ Ships from Japan in 3-5 days
✓ Duties prepaid for US orders
✓ Tracked delivery via Japan Post
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What it is
Developed using the unique technology of "Medicated BARTH Neutral Bicarbonate Bath Additives" inspired by the rare German spring quality "neutral bicarbonate spring". While retaining the technology that allows bicarbonate ions to dissolve in the water for a long time, we have created a bath additive containing beauty moisturizing ingredients. collagen, hyaluronic acid. The hot water is like a beauty serum and envelops the whole body, giving moisture and firmness to the skin. Take your usual bath time to the next level with "15 minutes to condition your bare skin". Points. Abundantly dissolves bicarbonate ions Developed using the unique technology of "Medicated BARTH Neutral Bicarbonate Bath Additives". While retaining the technology that allows bicarbonate ions to dissolve in the water for a long time, we have created a bath additive containing beauty moisturizing ingredients. Contains collagen and hyaluronic acid Contains beauty moisturizing ingredients that are also used in cosmetics. The hot water is like a beauty serum and envelops the whole body, giving moisture and firmness to the skin. The simple formula is fragrance-free and color-free, with minimal unnecessary ingredients for washing your face and hair. You can also use the hot water to wash your face and hair. Recommended bath time Base material: Sodium bicarbonate, sodium carbonate Moisturizer
Ingredients
Sodium bicarbonate, citric acid, PEG6000, sodium carbonate, vitamin C, sodium, hydrolyzed collagen, sodium hyaluronate, sodium caprylyl sulfonate, sodium olefin (C14-16) sulfonate
How to use
Add approximately 3 tablets to lukewarm water (160L) at 37-40°C and wait until they have dissolved before bathing. Soak in the water for at least 15 minutes. While bathing, gently massage your body and scalp. The water containing BARTH Neutral Bicarbonate Bath Additive BEAUTY can also be used to wash your hair and face. Immerse yourself in the water up to your head and gently massage your scalp.
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.
I still didn't understand the effect.
A luxurious 15-minute bath in a "beauty serum" [Product Name] BARTH Neutral Bicarbonate Bath Additive BEAUTY [Usage/Texture] When dissolved in hot water, it creates fine bubbles, giving the water a smooth, viscous texture. It's fragrance-free and color-free, allowing you to fully appreciate the quality of the ingredients. [Favorite Points/Benefits] Not only does the bath's bicarbonate ions warm you from the inside out, but its greatest feature is its inclusion of collagen and hyaluronic acid. After your bath, your skin will feel moisturized and smooth, just like after applying serum, retaining moisture even in dry seasons. [Recommended Use] Add three tablets to lukewarm water (37-40°C) and soak for at least 15 minutes. We recommend rubbing the water into your face and hair for total body care.
I don't like soaking in the bathtub for 15 minutes, so I hope it will be effective in a shorter time. After the bath, I feel very warm and my skin feels moisturized. Since it is fragrance-free and color-free, I hope it will come out with a relaxing scent!
Somehow the bath water feels thick and moisturizing.
It has no scent and is colorless and transparent.