8 the Thalasso
Stellaseed White Mouth Dental Cleansing Paste Premium
Stellaseed White Mouth Dental Cleansing Paste Premium
Rated out of 7.0 by Japan's largest beauty community.
Intensive whitening toothpaste
✓ 100% authentic. Direct from brand or official stores only
✓ Ships from Japan in 3-5 days
✓ Duties prepaid for US orders
✓ Track your order via your national carrier (USPS / Royal Mail)
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What it is
Contains highly concentrated stain removal ingredients for thorough care! This one product has six functions! Complete from whitening to bad breath treatment.
Ingredients
Calcium carbonate (abrasive), water (base), glycerin and sorbitol (humectants), PEG-8 (cleaning agent), xylitol (flavoring agent), hydroxyapatite (cleaning agent), ethanol (solvent), silica (cleaning agent), cellulose gum (binder), sodium methyl cocoyl taurate (foaming agent), pentasodium triphosphate (cleaning agent), papain (humectant), sodium bicarbonate (cleaning agent), lactobacillus lysate and yogurt liquid (milk) (humectant), spearmint oil, peppermint oil, eucalyptus leaf oil, rosemary leaf oil (flavoring), menthol (cooling agent), cetylpyridinium chloride (cleaning agent), persimmon tannin, sword bean seed extract, sapindus trifoliatus fruit extract, polyquaternium-51, mastic resin oil, houttuynia cordata extract, trehalose, tocopheryl acetate, allantoin, dipotassium glycyrrhizinate (humectant), sodium carbonate (pH adjuster), PEG-60 hydrogenated castor oil (solubilizer), sodium chloride (stabilizer), dextrin (bulking agent), titanium dioxide (abrasive), BG (humectant), methylparaben, ethylparaben (preservatives)
How to use
Apply an appropriate amount to your toothbrush and brush your teeth and gums. *Can also be used by those with implants or electric toothbrushes.
We ship internationally from Japan!
Frequently Asked Questions
Are the products you sell authentic?
Authenticity is 100% guaranteed. We source directly from the brand, or from official stores within Japan.
All products are fresh off the shelves and never outdated.
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 can really feel my teeth getting whiter. I gave it 6 stars because the amount is small, but I wish there was more. It doesn't foam, so I can brush thoroughly, my mouth feels fresh, and I can really feel the whitening effect.
It has a delicate lather, but with continued use, I can really feel the dullness disappear! It's non-irritating and can be used.
My teeth have become dull with age, so I bought something that seemed to have a whitening effect...! It was easy to use, but 1,450 yen for 40g is a bit pricey, so I won't be buying it again.
I love coffee, so I bought this for my daily home care to prevent staining. It leaves my teeth feeling clean and smooth without any irritation. This is my second bottle, and I plan to continue using it for a while.