8 the Thalasso
8 The Thalasso Smooth Repair & Aqua Serum Hair Treatment
8 The Thalasso Smooth Repair & Aqua Serum Hair Treatment
Rated 4.9 out of 7.0 by Japan's largest beauty community.
A moisturizing beauty serum treatment that leaves your hair smooth and silky all the way to the ends.
✓ 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
A serum treatment with a "Thalasso stem cell formula" that contains three types of stem cell extracts and seaweed extract. It delivers moisture to damaged, sparse hair, binds and retains moisture, and makes hair smooth and manageable all the way to the ends. This treatment contains serum and repairs hollow hair caused by damage and peeling cuticles. It delivers nutrients to the inside of the hair, smoothing the surface of the hair and leading to smooth, silky hair all the way to the ends. Fruity floral scent.
Ingredients
Water, stearyl alcohol, behentrimonium chloride, dimethicone, cetyl alcohol, cyclopentasiloxane, cetearyl alcohol, cetearyl glucoside, stearamidopropyl dimethylamine, isopentyldiol, pulkenetia volubilis seed oil, apple fruit cell culture extract, Porphyra yezoensis extract, soluble collagen, seawater, hydrolyzed keratin (cashmere goat), hydrolyzed wool cuticle protein, sodium lauroyl hydrolyzed silk, ceramide NP, ceramide NG, ceramide AP, squalane, bisethoxydiglycol cyclohexane-1,4-dicarboxylate, crithmum maritimum callus culture filtrate , Chitosan Succinamide, Kagerou Extract, Eryngium Maritimum Callus Culture Filtrate, Algae Extract, Sodium Alginate, Biscetearyl Amodimethicone, Ceteareth-7, Ceteareth-25, Dialkyl (C12-18) Dimonium Chloride, Butylene Glycol, Polyquaternium-7, Glycerin, Ceteth-15, Hydroxyethylcellulose, Cholesterol, Quaternium-33, Amodimethicone, Lecithin, Isopropanol, Xanthan Gum, Phytic Acid, Arginine, Lactic Acid, Pentasodium Pentetate, Silver Oxide, Sodium Benzoate, Phenoxyethanol, Fragrance
How to use
After shampooing, lightly remove excess water and apply an appropriate amount to your entire head. Then rinse thoroughly. *Hold down the neck of the pump and turn the head to the left to lift the head. Pump empty several times until the contents come out. If the head does not lift, tighten the neck firmly and hold it in place with your hand, then turn the head again.
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.
It makes my hair shiny. It smells great and is an easy-to-use product!
I tried using it for the first time in a while ^ ^ It made my hair smooth and silky without any dryness!
It's moisturizing and smells good!
The scent was a lovely floral scent that wasn't too sweet, but my hair was so dry that it still felt dry.
I found a cheap trial size at a recycle shop, so I bought one. My scalp odor and greasiness disappeared after using it. My hair is now smooth. I'd been using olefin-based shampoos, which had me concerned about the oiliness and odor of my scalp, but this is an amino acid-based shampoo, so it's improved the situation. I have thin hair that gets tangled no matter what shampoo I use, and it still gets tangled with this shampoo. I guess it's just my hair type.