Kojic acid pads OEM manufacturer

Kojic acid is one of the strongest-selling brightening actives in the US pad category — and one of the few where a brand can get the whole launch wrong on a single number. Since February 2025 the EU has enforced a hard ceiling: kojic acid is restricted to 1%, in face and hand products only. Formulate at 2% because a US competitor does, and your EU launch is non-compliant before it ships. This guide covers the regulation exactly as written, the browning problem that ruins kojic pads on shelf, when to use kojic dipalmitate instead, the claims you can safely make, and what it costs to launch.

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The EU restriction, exactly as written

This is the single most important fact for anyone launching a kojic acid product into Europe or the UK, and it is the one most suppliers will not tell you:

Three practical consequences follow, and each of them has killed real launches:

• You cannot copy a US formula into the EU. Plenty of US kojic pads sit at 2% or above. That formula is not placeable on the EU market.
• A "body brightening" kojic pad is not an EU product at all. The restriction is scope-limited to face and hand — a body pad has no compliant path with kojic acid as the active.
• The UK mirrors this position. Brands selling into both markets should assume a single compliant formula at ≤1% for face, rather than maintaining two.

If your target market is the US only, the EU ceiling does not bind you — but building at ≤1% from the start is usually the cheaper decision, because it keeps one formula, one stability programme and one label valid for both markets. That is the version we default to unless a brand tells us it is US-only.

The browning problem — the other reason kojic pads fail

Kojic acid oxidises readily, and the oxidation products are brown. Three conditions accelerate it: trace metal ions, light exposure, and higher pH. On a white pad, browning is brutally visible — the customer does not read "oxidised active", they read "expired product" and request a refund.

The controls are well understood, and they need to be designed in from the first sample rather than patched later:

Kojic acid vs kojic dipalmitate — when to switch

In practice most brands want the words "kojic acid" on the front of the jar, so the answer is usually free kojic acid at ≤1% with a proper stability package — not a switch to the ester. The ester earns its place when a product ships to hot climates, sits in long retail rotation, or uses a transparent jar for visual reasons.

How to build the pad

A kojic pad rarely ships as a single active. The pairing does most of the work on both efficacy and tolerance:

• Kojic + niacinamide — the safest, broadest-acceptance brightening pairing, and the easiest to keep stable.
• Kojic + tranexamic acid — a stronger even-tone story for post-blemish marks; see our tranexamic pad guide.
• Kojic + turmeric (THC) — the pairing driving much of the current US search demand; use the colourless THC route so the two pigment risks do not compound. See the turmeric pad guide.
• Kojic + mandelic acid — adds gentle texture benefit; gentler on deeper skin tones than glycolic. See the mandelic pad guide.

On substrate, the same logic as any oxidation-sensitive formula applies: a tightly bonded spunlace or lyocell pad with low free-fibre count, embossed rather than flat, in an opaque jar. Because Yanse makes the pad and the essence in the same plant, the substrate and the stability package are tuned against each other in one run rather than negotiated between a converter and a filler.

How to vet a real kojic-pad maker

• "What percentage do you formulate at, and does that clear EU Annex III?" A maker who does not immediately say "1% maximum, face and hand only" has not read the regulation.
• "Show me an accelerated-stability colour result." Browning shows up fast under accelerated conditions. If they have no data, they have no control package.
• "Free kojic acid or the dipalmitate — and why for my market?" The right answer depends on climate, packaging and label strategy, and a real formulator will ask you those questions back.
• "Do you make the pad or just fill it?" On an oxidation-sensitive formula the substrate is part of the stability system.
• "Can you support EU CPNP and US MoCRA documentation?" A brightening active with a restriction attached is exactly where documentation gaps bite.

Yanse manufactures both the essence and the pad in its own 8,000 m² Class-100,000 cleanroom in Fujian, with dual cosmetic and disinfection-product production licences, and holds ISO 22716 and US FDA Cosmetic GMP — both certified by Bureau Veritas and valid to 2028-05-29 — alongside GMPC, Sedex 4-pillar, FSC and Halal, with SGS third-party testing available on request. The factory has been audited by L'Oréal, Watsons, MINISO and Mentholatum (audit relationships only, not an endorsement).

Educational content for brand and product teams. Regulatory positions summarised here are current as of August 2026 and are provided for orientation only — they are not legal advice. Ingredient levels, permitted claims, product scope and cosmetic/drug classification vary by market and change over time, and must be confirmed against the current rules of your target market before launch. Yanse Cosmetics is a contract manufacturer (OEM/ODM) and does not sell finished consumer goods under its own brand.