Japan Pharmaceutical Affairs Act: Cosmetics Labeling Updates for 2026

The Pharmaceutical and Medical Device Act (PMD Act, commonly called Yakujiho after its predecessor law, the Pharmaceutical Affairs Act) classifies cosmetics in Japan as products intended to "beautify, cleanse, improve or maintain the attractiveness, appearance, or health of the human body by rubbing, sprinkling or similar application, provided that the effect on the human body is mild." This definition places products such as moisturizers, shampoos, lipsticks, sunscreens (at SPF levels below 50), and baby skincare products in the cosmetics category. Products claiming stronger physiological effects (such as hair growth, skin whitening beyond a certain efficacy level, or UV protection above SPF 50) are classified as quasi-drugs (iyakubu gaihinn) and require pre-market approval from the Minister of Health, Labour and Welfare (MHLW).

The MHLW's cosmetics regulatory framework includes three principal legal instruments: the PMD Act (governing the classification and business licensing of cosmetics), the Cosmetics Quality Standards (kozagorui oyobi seibun no kijun, MHLW Notification No. 331/2000 as amended) specifying permitted and prohibited ingredients, and the Cosmetics Labeling Standards (keshohin hyoji no kijun, MHLW Notification No. 332/2000 as amended) specifying labeling requirements. Taiwan cosmetics exporters must comply with all three instruments: the business licensing requirement (met by appointing a Japan-based importer who holds a koshohin hanbaigyo kyoka, cosmetics import business license), the ingredient standards (affecting which ingredients can be used in Japanese-market formulations), and the labeling standards (governing what must and must not appear on the Japanese-language label).

Japan's cosmetics ingredient standards divide substances into three categories: prohibited substances (kinshi seibun, approximately 70 substances completely prohibited in all cosmetics), restricted substances (seigen seibun, approximately 130 substances permitted only up to specified maximum concentrations or in specified applications), and permitted colorants (including the positive list of 102 tar dyes permitted in cosmetics). Formulations developed for Taiwan or EU markets may contain substances restricted in Japan at concentrations exceeding the Japanese limits: for example, propylparaben is permitted in EU cosmetics at 0.14 percent (as a single ester), but Japan restricts the total concentration of all parabens to 1 percent with specific restrictions applying to children's products. Audit every ingredient in your Japanese-market formulation against the current Japanese ingredient standards before production.

Japan's cosmetics business license (koshohin hanbaigyo kyoka) is held by the Japan-based importer (yunyu hanbaisho). The license is issued by the prefectural government in the prefecture where the importer's place of business is registered, and requires that the applicant demonstrate pharmaceutical management capability (yakuji kanri responsibility, typically requiring a pharmacist or appropriately qualified person on staff). The license application includes the applicant's company registration certificate, proof of pharmaceutical management capability, facility inspection, and government fee of JPY 20,000 to JPY 45,000 depending on the prefecture. Processing time is 4 to 8 weeks. Without a valid Japanese import business license, importing cosmetics for commercial sale in Japan is illegal under the PMD Act.

MHLW issued two significant updates to the Cosmetics Labeling Standards in 2025, taking effect from January 2026. The first update (MHLW Notification issued August 2025) requires that all cosmetics with SPF claims display the SPF value and the tested PA (Protection Grade of UVA) value prominently on the front label panel, in addition to the existing requirement for these values to appear in the standard ingredient declaration area. The revised requirement follows consumer research showing that 42 percent of Japanese consumers cannot identify the SPF level of a sunscreen product when it is listed only in the ingredient area. For Taiwan sunscreen and UV protection cosmetics targeting Japan, reformatting label artwork to display SPF and PA values on the front panel is mandatory from January 2026.

The second 2026 update (effective April 2026) mandates expanded warning statements for certain ingredient categories. Products containing formaldehyde-releasing preservatives (such as DMDM hydantoin, imidazolidinyl urea, or quaternium-15) must now display an explicit warning in at least 9-point font stating "Contains a formaldehyde-releasing preservative; do not use if allergic to formaldehyde" (horumuarudo ho-shitsu seibun o ganyusuru; horumuarudo arerugi no kata wa shiyoushi nai koto). Additionally, products intended for use near the eye area that contain lash-building polymers (ingredients that extend or thicken lash appearance) must carry a new caution statement about contact lens use. Taiwan cosmetics brands exporting to Japan must review their product range against both new warning requirements before the April 2026 implementation date.

The MHLW updated the Japanese INCI (International Nomenclature of Cosmetic Ingredients) Name Dictionary in March 2025, adding 112 new ingredient names and revising the Japanese-language rendering of 34 existing names. The Japanese INCI Name Dictionary is maintained by the Japan Cosmetics Industry Association (JCIA) and is the mandatory reference for ingredient declaration on Japanese cosmetics labels. If your product was previously labeled with a JCIA ingredient name that was revised in the March 2025 update, you must update the label to use the new name by the MHLW's transition deadline of December 31, 2026 for products already on the market, and immediately for new products produced after the publication date. Check every ingredient in your Japanese label against the March 2025 edition of the JCIA dictionary.

Full ingredient declaration (zenseibunn hyoji) has been mandatory for all cosmetics in Japan since 2001, with no exceptions for trade secrets or proprietary blends. All ingredients must be listed in descending order of concentration for ingredients above 1 percent, with ingredients at or below 1 percent listed in any order following the above-1-percent ingredients. Fragrance and flavor ingredients that are not individually named must be declared collectively as "koryo" (fragrance) or "koryo (name)" if the fragrance compound has a specific JCIA name. New since 2024: products containing any of the 26 EU-identified fragrance allergens must individually name those allergens in the Japanese INCI name in the ingredient list rather than including them under "koryo," bringing Japan into alignment with the EU's 2023 fragrance allergen labeling regulation.

INCI translation for Japanese cosmetics labeling is more complex than for EU or US markets because Japan uses its own parallel nomenclature system that is derived from but not identical to the international INCI system. The JCIA Japanese INCI Name Dictionary maps each international INCI name to an approved Japanese-language rendering in katakana. Some ingredients have Japanese names that differ significantly from their Latin or INCI name: for example, the EU INCI name "Butylene Glycol" is rendered in Japanese as "1,3-buchirengurikoru" in the JCIA dictionary. Translation by a general-purpose translator without access to the current JCIA dictionary will produce errors: the dictionary uses highly specific chemical nomenclature rules and is not replicable from general chemical knowledge alone.

Purchasing access to the JCIA Japanese INCI Name Dictionary requires JCIA membership or purchase of the annual printed edition (cost: JPY 25,000 for the 2025 edition). JCIA membership for a foreign company ranges from JPY 50,000 to JPY 200,000 per year depending on company size. An alternative is to engage a Japan cosmetics regulatory consultant who maintains current JCIA dictionary access as part of their service offering, and to have them review and verify every Japanese-language ingredient name on your label before printing. The cost of a Japanese INCI ingredient name review by a qualified consultant is JPY 50,000 to JPY 150,000 per product, which is a justified investment given that label errors require reprint, reprinting can cost JPY 300,000 to JPY 1,500,000 per product depending on quantity, and incorrect ingredient names can trigger MHLW product recalls.

Colorant declaration in Japanese cosmetics labeling requires specific attention because Japan uses a "by name" list of 102 permitted tar dye colorants (listed in the Cosmetics Quality Standards) whose Japanese names often differ from EU Color Index numbers and INCI color names. For example, the EU INCI name "CI 77891" (titanium dioxide) is listed in Japan under its specific Japanese cosmetics standard name "sankachitan" (with Chinese characters). Red No. 223 in the Japanese colorant list corresponds to the EU INCI name "Fluorescein." Each colorant used in your Japanese product must be identified by its correct Japanese tar dye name (not EU CI number or US D&C name) in the ingredient list. Failure to use the correct Japanese colorant name is one of the most frequent labeling violations identified in MHLW post-market inspections.

UV filter ingredient declaration in Japan requires specific attention for sunscreen products. Japan permits a specific list of UV filter ingredients, with maximum permitted concentrations for each. The MHLW's updated Cosmetics Quality Standards (2024 amendment) added 4 new UV filter ingredients to the Japanese permitted list (including Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (Tinosorb S) and Methylene Bis-Benzotriazolyl Tetramethylbutylphenol (Tinosorb M)), aligning Japan more closely with EU permitted UV filter standards. Taiwan sunscreen formulations using these previously non-permitted UV filters for EU or Australian markets can now be exported to Japan without UV filter reformulation, reducing the cost and lead time for Japan market entry for sunscreen products. Verify each UV filter against the current Japanese Cosmetics Quality Standards before finalizing your Japan formulation.

MHLW and the 47 prefectural government health departments jointly enforce the PMD Act for cosmetics. Enforcement actions range from administrative guidance (gyosei shido, informal correction requests that have no legal penalty but must be addressed promptly to avoid escalation), business improvement orders (gyomu kaizen meirei, formal orders requiring specific corrective actions within a stated timeframe), business suspension orders (gyomu teishi meirei, suspending the importer's cosmetics business license for a specified period), and product recall orders (kaishuu meirei, mandatory recall of non-compliant products from the market). The typical escalation sequence for a cosmetics labeling violation starts with administrative guidance, progresses to a business improvement order if not corrected within 30 to 60 days, and can result in business license suspension for repeat offenders.

Criminal penalties under the PMD Act Article 84 apply to the most serious violations: manufacturing or importing cosmetics without a business license (imprisonment of up to 3 years or fine of JPY 3 million, or both), making false or misleading quasi-drug efficacy claims for a cosmetic product (imprisonment of up to 2 years or fine of JPY 2 million), and violating a business suspension order (imprisonment of up to 1 year or fine of JPY 1 million). For Taiwan brands, the most practically relevant penalty is civil administrative action resulting in product recall: recalls are publicly announced on the MHLW website and the prefectural government website, creating negative publicity that is highly damaging in Japan's cosmetics market, where consumer trust in product safety is paramount.

Amazon Japan enforces MHLW compliance at the listing level for cosmetics. Products listed in the Beauty category on Amazon Japan must have a valid Japan importer name, Japan-compliant label, and, for any product making quasi-drug claims, a valid MHLW approval number (shouin bango). Amazon Japan conducts periodic compliance sweeps of Beauty category listings and suspends listings that do not include the required importer information or that make unapproved claims. A suspended Amazon Japan Beauty listing cannot be reinstated until the compliance issue is resolved and documentation provided to Amazon's Compliance team. Preventing suspension requires proactively ensuring your Amazon listing copy (title, bullet points, product description) uses only language consistent with the cosmetics category, not quasi-drug efficacy language.

Post-market surveillance by MHLW is conducted through the Pharmaceutical Affairs Information Monitoring System (PAHIS), which receives reports from prefectural governments, consumer organizations, pharmacies, and the general public about suspected non-compliant products. MHLW also conducts annual targeted product testing campaigns focused on specific ingredient categories (for example, in 2025, MHLW tested 180 imported cosmetics products for undisclosed active ingredients and prohibited substances). Taiwan brands should monitor MHLW annual testing campaign announcements and ensure their Japan-market products do not contain any substances that could appear in MHLW spot tests as undeclared or prohibited. Engage a Japan cosmetics regulatory consultant to review your formulation against the current Cosmetics Quality Standards at least once per year, or whenever you change a raw material supplier or reformulate a product.