Tsujimoto Market: Our Guarantees
Description
La Sana Medicated Shampoo & Treatment Set — Japanese Quasi-Drug Scalp Care, 230 ml + 170 g
Overview
La Sana is made by Yamasaki, a Japanese company whose whole hair range is built on seaweed. This listing is the medicated pair — a 230 ml shampoo and a 170 g treatment, both Japanese quasi-drugs, aimed at the scalp rather than at the lengths. The approved active in both is dipotassium glycyrrhizate, a liquorice-derived anti-irritant cleared in Japan for preventing dandruff and itching. The cleansing base is amino-acid type, and the formula carries a blend of eleven seaweed extracts and a hair-penetrating collagen.
A correction worth stating plainly: the text that used to sit on this page described a different La Sana product. It talked about sea mud from Brittany, elecampane and negative-ion cleansing — that is the Seaweed & Sea Mud line, which is an ordinary cosmetic, not this medicated set. The whole description has been rewritten against the right product. See also our Japanese haircare range.
Key Benefits
- ✓ Both items are Japanese quasi-drugs with a named approved active, not cosmetics with a medical-sounding name
- ✓ Dipotassium glycyrrhizate, cleared in Japan for preventing dandruff and itching
- ✓ Amino-acid cleansing base: milder than a sulfate lather, which matters on a scalp that is already irritated
- ✓ Eleven-seaweed extract blend, the ingredient family the brand has built forty years on
- ✓ Shampoo and treatment sized to run out at roughly the same time — about a month each
- ✓ Shipped from our base in Kobe, Japan with tracking, in the Japanese domestic packaging
Product Details
| Brand | La Sana |
|---|---|
| Manufacturer | Yamasaki Co., Ltd. |
| Country of origin | Japan |
| Product type | Medicated shampoo + rinse-off treatment (pair) |
| Volume / count | Shampoo 230 ml + treatment 170 g |
| Line | Medicated (yakuyou) line |
| JAN code | See package label |
| Regulatory status | Quasi-drug (iyakubugaihin) in Japan |
Who Is This For?
- People whose scalp flakes or itches and who want an approved active rather than a scented anti-dandruff shampoo
- Anyone whose hair feels thinner with age and who wants the scalp addressed at wash time
- Users who find sulfate shampoos too stripping on an already reactive scalp
- Check first if: you have a thyroid condition — the formula is seaweed-based and seaweed carries iodine
- Not suitable if: you avoid animal-derived ingredients — it contains collagen
How to Use
- Wet the hair thoroughly and work the shampoo into a lather in the hands first.
- Apply to the scalp and wash the skin, not the lengths — the lengths clean themselves in the rinse.
- Rinse fully. Residue at the roots is what most people mistake for dandruff.
- Squeeze the water out and apply the treatment from mid-lengths to ends, and lightly at the scalp.
- Leave two to three minutes, then rinse until the hair no longer feels coated.
Frequency: Daily, or as often as you wash
Full Ingredients
Approved active (both items): dipotassium glycyrrhizate, from liquorice root, approved in Japan for preventing dandruff and itching.
Named base and supporting ingredients: amino-acid-type cleansing surfactants (shampoo); a blend of extracts from eleven seaweeds; hydrolysed collagen described by the maker as hair-penetrating.
Yamasaki publishes the active and the headline ingredients but not a full INCI list for this pair online. The complete list is printed on both bottles; ask us before ordering if you need to check a specific ingredient, and we will read the label.
Cautions
- Contains hydrolysed collagen, an animal-derived protein — not suitable for vegetarians or vegans, and worth checking if you avoid animal ingredients for religious reasons.
- Built on seaweed extracts, which carry iodine — worth knowing if you have a thyroid condition or an iodine sensitivity, even in a rinse-off product.
- Avoid the eyes while washing; rinse with plenty of water on contact.
- Stop and consult a doctor if scaling, redness or itching worsens instead of settling.
- Keep out of reach of children. Store away from direct sunlight and high temperatures.
Package Contents
1 × medicated shampoo, 230 ml, and 1 × medicated treatment, 170 g. Japanese domestic packaging with Japanese-language labelling.
Shipping & Store Notes
- Ships directly from Japan
- Processing time: 2–6 business days
- Tracking number provided after dispatch
- Import duties and taxes may apply depending on destination country
- Opened cosmetics cannot be returned for hygiene and safety reasons
Authenticity Guarantee
Every product at Tsujimoto Market is sourced directly from Japan and verified for authenticity. We never sell fakes or grey-market goods. Each order is carefully packed in Kobe, Japan and dispatched with full tracking.
FAQ
Do I have to buy the matching shampoo and treatment together?
No — each works on its own, and the pairing is a marketing structure as much as a formulation one. What is true is narrower: a shampoo that leaves the cuticle slightly acidified gives the treatment that follows a marginally better surface to sit on, and the two share a fragrance so they do not fight each other in the shower. If your budget stretches to one of the pair, buy the treatment: it stays on the hair, while shampoo is on the head for ninety seconds and then goes down the drain.
What does "quasi-drug" mean on a Japanese label?
Quasi-drug (iyakubugaihin) is a Japanese regulatory category that sits between cosmetics and medicines. A product enters it by naming specific active ingredients at approved concentrations, and it may then state the effect those actives were approved for. It is not a medicine and it is not a promise of a result on your skin. Outside Japan the same product is normally imported and sold as an ordinary cosmetic.
Will this regrow hair I have already lost?
No, and any page that says otherwise is selling you something. A Japanese scalp essence in this category is approved to support the hair you still have — reducing itch and flaking, keeping the scalp comfortable, and helping existing growth stay in place. It does not restore follicles that have closed, and it does not treat androgenetic hair loss, for which there are actual medicines. If your parting is widening or you are shedding in clumps, see a dermatologist rather than working through bottles of essence.
The packaging is in Japanese — how do I know what I am using?
The carton and bottle carry Japanese-language labelling, because this is stock made for the Japanese domestic market. Where an ingredient list appears on this page, it is translated from that labelling or from the manufacturer's own published data; where the manufacturer does not publish one, the ingredients section says so rather than filling the gap. Either way, send us a photo of anything unclear on the box after delivery and we will translate it, and ask us before ordering if you need the full label list first.
Will I pay customs duty or import VAT?
That depends on your country and on the declared value of the parcel, not on us. We ship from Japan with a correct customs declaration and full tracking; any duty or import VAT your country charges is collected by your local carrier or customs office on delivery. Check your national de-minimis threshold before ordering if you want to avoid a surprise.
