8 the Thalasso
8 The Thalasso Deep Repair & Aqua Moist Hair Treatment Renewal Refill, 400ml (Aqua White Floral Scent)
8 The Thalasso Deep Repair & Aqua Moist Hair Treatment Renewal Refill, 400ml (Aqua White Floral Scent)
@cosme rating: 5.3/7.0
The bounciest hair ever. Newly revamped formula
✓ 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
Eight the Thalasso was born from the skincare concept of "saturating" hair and scalp with serum. Its serum-like formula, which moisturizes hair all the way to the ends and leads to beautiful, bouncy hair, has garnered widespread support. However, hair concerns faced by users are becoming more diverse every year, including damage caused by everyday hair irons and hair coloring, dryness due to the seasons and environment, and the lack of shine and frizz that comes with age. To address these increasingly complex repair needs, the brand's original moisture retention and repair capabilities have been updated. With an approach that goes beyond simply "washing" to "saturating" hair with serum, Eight the Thalasso delivers the "bounciest hair" ever. *Compared to other products in the series. *This product is a refill; the bottle is not included.
Ingredients
Water, cetearyl alcohol, dimethicone, behentrimonium chloride, glycerin, ethylhexyl palmitate, gamma-docosalactone, hydrolyzed keratin (wool), polyquaternium-51, Crithmum maritimum callus culture filtrate, ceramide NP, ceramide AP, ceramide NG, apple fruit cell culture extract, argania spinosa callus culture extract, water-soluble collagen, seawater, Porphyra yezoensis extract, sodium alginate, fucus vesiculosus extract, squalane, chitosan, chitosan hydroxypropyl Trimonium chloride, bisethoxydiglycol cyclohexane-1,4-dicarboxylate, diethyl sebacate, hydroxyethyl urea, phytosteryl/octyldodecyl lauroyl glutamate, distearyldimonium chloride, quaternium-33 (wool), cholesterol (wool), BG, PG, isomalt, xanthan gum, lecithin, hydrogenated lecithin, hydroxyethyl cellulose, phytosterols, sodium citrate, citric acid, phenoxyethanol, fragrance
How to use
Treatment: After shampooing, lightly remove excess water and apply an appropriate amount to the entire hair. Then rinse thoroughly.
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 couldn't find a shampoo and treatment that I liked, so I tried a variety of products, from cheap to slightly more expensive, but this shampoo and treatment was by far the best! The more I used it, the better my hair became, and it helped me with dryness and frizz, so I highly recommend it. I think it can be used by people with pretty much any hair type! The scent is also elegant, so it can be used by both men and women.
[Testing 200 Shampoos] No. 149 Thank you for viewing! Following me encourages me to post more! ★ 20s Hair Type: Thick Bob / Bleached (2-3 times) I've been eyeing Eight the Thalasso for a while now at the drugstore. I first bought the trial size. The scent is aqua white floral, a gorgeous, clean scent! I love it!! It lathers up really well, with a bouncy, fluffy lather!! It leaves my hair moisturized, not sticky, and smooth to the touch. It's a shampoo I'd definitely like to repurchase.
The shampoo lathers well and gently removes sebum and styling products. It also contains plenty of beauty serum ingredients, so your hair won't feel stiff after washing and will be moisturized and manageable.
The scent and feel are good.
I've seen it recommended a lot on social media and in stores recently, so I was curious and decided to buy it! It makes hair that tends to get dry and tangled due to dryness, coloring, and heat damage more manageable! It's exactly how my hair is right now, so I wondered if a shampoo and treatment would really make a difference, but I could see a big change after just one shampoo! It charges moisture from the core, leaving hair moisturized and shiny all the way to the ends! It's easy to wash with, and the aqua white floral scent that spreads the moment you lather it up is a wonderful scent. ◎ Even after drying, my hair feels moisturized and manageable, and I can keep it looking beautiful for a long time! It's made styling my hair so much easier, and it's also easier to run my fingers through, so I recommend it♪♪