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Skin Clear · 30-day daily system

WHITE
CURCUMINOIDGLUTATHIONE

A Japanese beauty-from-within formula combining dokudami, glutathione-rich yeast extract, reduced turmeric, liquorice, coix and kiwi seed.

120tablets4per dayMade in Japan
White Curcuminoid Glutathione Skin Clear box and bottle by Yotsuba Japan

Why it was created

A layered routine for
antioxidant nutrition.

Skin appearance is influenced by many factors, including daily care, environmental exposure, nutrition and individual physiology.

White Curcuminoid Glutathione brings together a glutathione-rich yeast extract, reduced turmeric and a distinctly East Asian botanical system led by dokudami.

Dokudami · Reduced turmeric · Glutathione-rich yeast extract
White Curcuminoid Glutathione presented with tablets in a white sculptural studio setting

Biochemistry · glutathione context

A changing redox state.
A wider antioxidant network.

A reversible biochemical cycle introduces reduced and oxidised glutathione, alongside the formula’s separate botanical layer.

Explore ingredient evidence
YOTSUBA JAPAN FORMULA STUDY
Reduced glutathione is commonly abbreviated GSH. Glutathione can cycle between reduced and oxidised forms as part of cellular redox biology. Two glutathione molecules can form an oxidised pair, GSSG, which can be converted back to GSH through cellular enzyme systems. General biological context, not a clinical result for this supplement. Simplified and not to scale.GSHGSSG
01/ 03

Reduced form

Reduced glutathione is commonly abbreviated GSH.

General biological context, not a clinical result for this supplement. Simplified and not to scale.

Formula architecture

One daily system.
Four source layers.

01
Houttuynia cordata flower and leaves, the source of the formula's dokudami extract
Dokudami foundationHouttuynia cordata is the first-listed ingredient and gives the formula its Japanese botanical foundation.
02
Turmeric rhizome, source of the formula's reduced white curcuminoid
White curcuminoidReduced turmeric extract provides the pale tetrahydrocurcuminoid layer behind the product name.
03
Pearlescent three-part form representing the glutathione layer
Glutathione layerA glutathione-rich yeast extract forms the formula’s central tripeptide-inspired antioxidant layer.
04
Kiwifruit slice showing the seeds used to represent kiwi seed extract
Kiwi seedKiwi seed extract completes the selected source story alongside coix, liquorice, selenium yeast and vitamins.

Inside the formula · per 4-tablet daily serving

Botanical first.
Antioxidant by design.

Amounts are transcribed from the current English Supplement Facts panel and checked against the present Japanese ingredient declaration. Destination-market labels remain authoritative.

Select an ingredient to explore its source or food comparison

Food & ingredient forms

Illustrative ingredient or source material for Houttuynia cordata extract; not the reference food preparation, a measured portion or extraction yield

Dokudami

Dokudami · Selected botanical preparation

A comparison of source and prepared forms

01 · Familiar source or food context

Dokudami

The original botanical material contains a natural mixture of structural and plant constituents.

02 · Prepared ingredient

Selected botanical preparation

The formula uses the named plant part or preparation as a measured ingredient, with its own processing and moisture basis.

Ingredient perspective & source

The original botanical material contains a natural mixture of structural and plant constituents. The formula uses the named plant part or preparation as a measured ingredient, with its own processing and moisture basis. The first-listed ingredient in the current Japanese composition and the botanical identity of the finished food.

This visual explains ingredient identity or origin. It does not represent a food portion, a measured extraction ratio, equivalent nutrition, absorption or a health effect.

Yotsuba Japan · Formula declaration

Food quantities compare selected constituent content only. Form comparisons explain the relationship between a familiar source and a prepared ingredient; they do not imply a portion or extraction ratio. Foods and supplements differ in nutrition, absorption and health effects. Images are illustrative, not measured portions or eating recommendations.

Houttuynia cordata extract: ingredient perspective open
White Curcuminoid Glutathione bottle held beneath Japanese cherry blossom

A complete daily composition

Japanese botanical roots.
Modern ingredient language.

The formula connects recognised East Asian botanicals with a reduced curcuminoid and a glutathione-rich yeast layer in a four-tablet daily format.

Compact tablet formatFour-tablet daily serving30-day inner-beauty ritual

Ingredient evidence library

Evidence, with the
right boundaries.

Important distinctionThe sources below examine individual ingredients, different preparations or non-equivalent doses. They are not clinical trials of the complete White Curcuminoid Glutathione formula.
GlutathioneRandomised human study

Oral glutathione and body glutathione stores

A six-month placebo-controlled study evaluated 250 mg or 1,000 mg of glutathione daily. It concerns standalone glutathione at different doses, not this finished formula.

GlutathioneRandomised human study

Oral glutathione and skin melanin index

A four-week trial evaluated 500 mg daily and reported changes in melanin indices at several sites. The dose and preparation differ materially from this product.

GlutathioneRandomised human study

Reduced and oxidised glutathione and skin properties

A 12-week placebo-controlled study evaluated 250 mg daily of reduced or oxidised glutathione. It used standalone glutathione at a different dose, not this yeast-extract formula.

TetrahydrocurcuminScientific review

Identity and preclinical research landscape

The review describes tetrahydrocurcumin as a pale hydrogenated curcumin metabolite and maps predominantly preclinical research. It does not establish a skin outcome for this product.

TetrahydrocurcuminoidsEFSA safety assessment

A safety assessment with a defined boundary

EFSA assessed a standardised >95% tetrahydrocurcuminoid novel food and concluded it was safe at 140 mg/day for adults excluding pregnancy and lactation. That material is not automatically equivalent to this finished formula.

Curcumin & piperineHuman pharmacokinetic study

Piperine and curcumin bioavailability

A small human study examined 2 g curcumin with 20 mg piperine. It supports the ingredient-pairing rationale but uses conventional curcumin and doses far above this reduced-turmeric formula.

Professional product data

Complete details,
clearly organised.

The quantitative active formula is presented above. Here, professionals can review the complete ingredient declaration, allergens, format, nutrition, directions and handling information.
Complete ingredients & allergens01

Current Japanese composition: Houttuynia cordata extract (manufactured in Japan), yeast extract, liquorice powder, reduced turmeric extract, coix extract, maltitol, processed kiwi seed extract powder, selenium-containing yeast, vitamin E-containing vegetable oil, black pepper extract, crystalline cellulose, silicon dioxide, calcium stearate, modified starch, vitamin B6, vitamin B2 and vitamin B1.

Allergen information: Contains kiwifruit. The approved market-specific label remains authoritative.

Format & daily serving02
Format 120 tabletsDaily serving 4 tabletsSupply 30 daysTablet weight 320 mg
Nutrition per daily serving03
Energy 4.68 kcalProtein 0.16 gFat 0.04 gCarbohydrate 0.92 gSalt equivalent 0.001 g
Use, storage & precautions04

Take four tablets daily with water or warm water according to the current Japanese directions. Store away from high temperature, humidity and direct sunlight, and consume promptly after opening. People with a kiwifruit allergy should avoid the product. People taking medicines, receiving medical treatment, or who are pregnant or breastfeeding should consult a qualified healthcare professional before use. Stop use if an unexpected reaction occurs. This is a food supplement, not a medicine.

日本MADE
IN JAPAN

Japanese quality & provenance

Botanical tradition,
completed in Japan.

Dokudami, coix and liquorice give the product a recognisable East Asian botanical identity. The complete 120-tablet formula is manufactured in Japan for professional export channels.

Frequently asked

Clear answers,
without overclaiming.

01What does “white curcuminoid” mean?+

The product uses a reduced turmeric extract. Tetrahydrocurcuminoids are pale metabolites derived from conventional yellow curcuminoids.

02What is the daily serving?+

The current Japanese directions indicate four tablets daily with water or warm water. Follow the approved destination-market label.

03Is glutathione listed directly on the Japanese label?+

The current Japanese composition lists yeast extract. Authorised-partner materials identify this as the formula’s glutathione extract layer.

04What allergen is declared?+

The current Japanese composition declares kiwifruit. People with a kiwifruit allergy should not use the product without appropriate professional advice.

05Are the cited studies trials of the finished product?+

No. They concern individual ingredients, other preparations or non-equivalent doses and do not establish an outcome for this finished product.

Food supplement · Not a medicine

Product information is educational and intended for professional portfolio review. It is not medical advice and is not intended to diagnose, treat, cure or prevent disease. Suitability, permitted claims and labelling must be assessed for each destination market.

White Curcuminoid Glutathione · Skin Clear

A clearer ingredient story,
built from within.

Detailed product documentation is available to verified clinics, professionals and authorised partners, subject to individual review.Available exclusively through authorised Yotsuba Japan partners.

Restricted professional access

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Detailed product documentation is released only after review by Yotsuba Japan or an authorised partner.
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