Japanese wellness · refined

Calm mind.
Radiant skin.

Two clean supplements. Nothing more.
L-Theanine
+ Magnesium
Calm focus
Marine Collagen
+ Vitamin C
Skin & structure
See the products Our philosophy ↓
Clean ingredients
Japanese inspiration
Holistic wellbeing
The Kiyomi position

Your body is not a passage.
Every ingredient you consume should bring value — not just transit through.

The Polish default
More ingredients means a better supplement.

Walk into any Polish pharmacy. The supplements with the longest ingredient lists sell best. Fifteen vitamins. Eight minerals. Four proprietary blends. The consumer logic: more = better coverage = better health. The reality: most of those ingredients pass through your body unused, and the ones that do absorb compete with each other for uptake.

vs
Japanese philosophy
Your body needs only what it needs. Nothing more.

Japan has the highest life expectancy in the world, and Japanese wellness philosophy is built on intentionality: give your body exactly what serves it, in the right form, at the right dose. The Japanese supplement market is built on mono-ingredient products, traceable sources, and the principle that purity is not minimalism — it is respect for the body.

The Kiyomi answer
Two products. Two ingredients each. Named sources. Nothing unnecessary.

L-Theanine from Japanese green tea — one ingredient, one purpose. Marine collagen from wild-caught fish beneath Mount Fuji — one ingredient, one purpose. No fillers. No flow agents beyond functional minimum. No excuses. If we cannot name where every milligram comes from, it does not go in the capsule.

Exactly 2 active
ingredients per product
Sourced from named
Japanese producers
Third-party HPLC
tested every batch
No artificial sweeteners,
colours or binders
Inspired by Japan,
made for Europe
Two essentials

The Kiyomi Collection

01 · Calm focus

L-Theanine
+ Magnesium

Quiet strength, sustained

L-Theanine is the amino acid behind Japanese green tea's ability to calm the mind without inducing sleep. In its patented Suntheanine® form — the only form backed by 200+ clinical studies — it works within 30–40 minutes. Paired with magnesium bisglycinate: the most bioavailable form, for stress regulation and sleep quality. Two ingredients. One purpose each.

Suntheanine® L-Theanine — Taiyo Kagaku, Japan 200 mg
Magnesium bisglycinate 150 mg
HPMC vegetable capsule shell —
Rice flour (flow agent, functional only) —
60 capsules · 30 days
Vegan
No sweeteners or binders
Suntheanine® certified
Two ingredients. Nothing else earns a place.
02 · Skin & structure

Marine Collagen
+ Vitamin C

Beauty from the source

nippi peptide® Wild Caught — marine collagen peptides from wild-caught deep-sea fish, produced at Nippi's Fujinomiya facility using water from Mount Fuji's underground aquifers. Vitamin C is not a filler: it is required for the body's natural collagen synthesis. Both ingredients work together because they have to. Everything else was removed.

nippi peptide® Wild Caught — Nippi Inc., Fujinomiya, Japan 5,000 mg
Ascorbic acid (Vitamin C) 80 mg
No other ingredients —
30 sachets · 30 days
Unflavoured
Compostable kraft sachet
nippi peptide® certified
Two ingredients. Nothing else earns a place.

"In Japan, the concept of mottainai — the tragedy of waste — applies not only to objects. It applies to what you ask your body to process unnecessarily."

Kiyomi was born from a simple act of subtraction. We took a conventional supplement formula and asked: which of these ingredients actually works? Which are here to fill space, to justify a price point, to make the label look impressive?

What remained was two. That is the starting point of every Kiyomi product, and it will never change.

2
Active ingredients per product
200+
Suntheanine® clinical studies
96
Years Nippi has made collagen
Mount Fuji seen across calm water in Fujinomiya, Shizuoka, Japan
The source

Nippi. Since 1928.
Beneath Mount Fuji.

Our marine collagen comes from Nippi Inc.'s facility in Fujinomiya — at the foot of Mount Fuji. Production water is drawn from underground Fuji aquifers, filtered through volcanic basalt over decades. This is not marketing. It is where the water comes from, and it matters for what ends up in your body.

Nippi holds 54% of Japan's collagen raw material market. Suntheanine® is produced by Taiyo Kagaku using a fermentation process that mirrors how L-theanine occurs naturally in the Camellia sinensis tea plant.

FSSC 22000 certified production facility
Heavy metals tested to EU supplement standards
Wild-caught fish only — fully traceable supply chain
Mount Fuji underground aquifer production water
Suntheanine®: EU Novel Food authorized, 200+ clinical studies
How we work

Three non-negotiables

清
Kiyoshi — Purity

Two active ingredients per product. No artificial sweeteners, no flavourings, no unnecessary binders. If an ingredient cannot be justified by the science of what the product does, it is removed. Not reduced. Removed.

源
Minamoto — Origin

Every ingredient is traced to its manufacturer. Suntheanine® from Taiyo Kagaku, Japan. nippi peptide® from Nippi Inc., Fujinomiya. Named ingredients, named origins, always visible on the label.

誠
Makoto — Honesty

Third-party HPLC testing on every production batch. The dose on the label is the dose in the capsule. Certificate of Analysis available for every run. We do not ask you to trust us — we show you the data.

Your body
will thank you.

Kiyomi launches in Poland in 2026. Join the waiting list for early access, founding member pricing, and the full story behind every ingredient we chose — and every one we removed.

ありがとう — Thank you. We will be in touch.

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PRIVACY POLICY