Chamaecyparis Obtusa Extract

Hinoki essential oil composition varies by plant part (leaf vs wood) and origin. Leaf-derived oils typically have sabinene, bornyl acetate, and α-terpinyl acetate as major components, while wood-derived oils have α-pinene and δ-cadinene as dominant constituents. α-Pinene is consistently a major monoterpene across both, with reported concentrations varying widely between samples. Hinokitiol — a tropolone-family compound — is present at low levels and concentrated separately for some formulation uses.

No. Hinoki is Chamaecyparis obtusa; hiba is Thujopsis dolabrata. Both are Japanese conifers, both are traditional construction timbers, and both contain hinokitiol — a tropolone-family compound named for hinoki but more concentrated in hiba (aomori hiba in particular). The two should not be substituted on labels; cosmetic INCI naming differentiates Chamaecyparis Obtusa entries from Thujopsis Dolabrata entries.

Yes. The leaf and wood extracts are listed under distinct labeling names — ヒノキ葉エキス (Chamaecyparis Obtusa Leaf Extract) and ヒノキ木エキス (Chamaecyparis Obtusa Wood Extract). The essential oil is listed separately by plant part (leaf vs wood). Hinokitiol as a purified compound has its own INCI listing and additional regulatory considerations in some product categories and concentration ranges; formulators using hinokitiol-dominant preparations should consult current Japanese and EU regulations for the specific use case.