- Laurus nobilis L. (Lauraceae), leaves, chưng cất hơi nước. "Laurel leaf / Bay laurel / Sweet bay / Nguyệt quế". CRITICAL name-trap cluster: "Bay leaf oil" + "Laurel oil" AMBIGUOUS — có thể mean L. nobilis leaves (trang này), Pimenta dioica leaf (Jamaican bay), Pimenta racemosa leaf ("bay rum"), Cinnamomum tamala (Indian bay/tejpat), hoặc L. nobilis FRUITS (laurel berry — EU-prohibited cosmetic).
- Chemistry = 1,8-cineole 38.1–43.5% + α-pinene 7.1–15.9% + α-terpinyl acetate 4.5–7.0% + linalool 6.2–6.5% + methyleugenol 1.4–3.8% + eugenol 1.2–3.0%. Dual-driver dermal cap: methyleugenol up to 3.8% binding (IFRA/EU methyleugenol 0.0004–0.01% → T&Y back-calculate to 0.5% oil ở 3.8%). 1,8-cineole 38.1–43.5% là infant-face CI driver.
- Hazards: Methyleugenol carcinogen-class (dose-dependent) + cineole CNS/breathing problem trẻ + skin sensitization (low) + mucous irritation (low). Contraindications: "KHÔNG áp lên hoặc gần mặt infant/trẻ" (cineole). Dual-driver caps: EU 0.005% / IFRA 0.01% / T&Y 0.5%. Max adult oral 18 mg/day.
- Sensitization + cross-sensitization rail: Multiple case reports occupational + aromatherapist contact dermatitis (Adisen 2007, Athanasiadis 2007, Foussereau 1963/1967a/b/1975, Özden 2001). laurel leaf 10% elicited 6/6 reactions trong costus-sensitized → CI cho costus-sensitized + Asteraceae-sensitized.
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