
UNESCO-listed Tomioka Silk Mill (Gunma) anchors Japan's heritage sericulture; remaining producers focus on high-purity sericin for cosmetic and biomedical applications.
Molecular weight typically 5,000-50,000 Da depending on extraction; serine content ~30% of amino acid profile.
Premium moisturisers, hair-conditioning serums, biomedical wound dressings.
Water-soluble silk protein extracted from the cocoon of Bombyx mori silkworms. Historically a by-product of fibroin (fiber-grade silk) extraction, sericin's high serine content (~30%) gives it strong film-forming and humectant properties for skincare formulations. Japan's silk industry — concentrated in Gunma, Nagano, and Saitama — has rebuilt around high-grade sericin production since the 2000s, using cocoons from JA Silk and small remaining sericulture cooperatives. Used in moisturisers, hair-care, and increasingly in injectable/wound-care medical applications.
| Jepang | JSCI listed (シルクセリシン); MHLW cosmetic ingredient |
|---|---|
| Uni Eropa | CosIng listed (Sericin); EU cosmetic regulation 1223/2009 compliant |
| Amerika Serikat | Acceptable for cosmetics under MoCRA; MoCRA registration required |
| Tiongkok | NMPA cosmetic ingredient; verify IECIC inclusion |
Ichimaru Pharcos Co., Ltd.
一丸ファルコス株式会社
Pengembang bahan aktif berbasis R&D dengan lebih dari 1.000 bahan kosmetik turunan alami. Ahli dalam ekstraksi botani Jepang — proteoglikan nabati, pelindung asam hialuronat, agen pencerah alami. Pemasok utama bahan aktif botani asal Jepang.
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Seiwa Kasei Co., Ltd.
成和化成株式会社
Spesialis bahan kosmetik turunan peptida dan protein sejak 1958. Keahlian dalam kolagen/protein terhidrolisis. Turunan vitamin C generasi baru iVC milik sendiri.
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