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CHAMAECYPARIS LAWSONIANA WOOD OIL.

Valuable CAS 91745-96-9 / 264201-23-2 / FRAGRANCE, SKIN CONDITIONING

Commonly known as Port Orford Cedarwood, this botanical oil serves as a multifaceted skin-conditioning agent with inherent antimicrobial properties. It is frequently utilized in precision formulations to provide a natural woody olfactory profile while simultaneously supporting the skin's defense against environmental stressors.

Skin Conditioning Fragrance Antimicrobial Masking

Science

The oil's efficacy is driven by bioactive terpenes, specifically Delta-Cadinene and Alpha-Terpineol, which deliver anti-inflammatory and antifungal benefits. Beyond its biological activity, it functions as a masking agent by interacting with olfactory receptors to neutralize malodors, while providing a light, non-occlusive conditioning film on the stratum corneum.


Research

Medium confidence
Effective range 0.19–5%
Optimal

0.5%

Key findings

  1. 01 Local lymph node assays demonstrate a lack of hypersensitivity response at concentrations up to 50%, suggesting low sensitization potential.
  2. 02 In vitro analysis indicates significant antigenotoxic potential at 0.19%–0.38%, supporting cellular integrity.
  3. 03 Dermal irritation testing confirms a concentration-dependent response, with 5% identified as a threshold for slight irritation in animal models.

Transparency

Commonly dusted
Min. effective
0.1%
Red flag below
0.05%

Because it is often used primarily for its scent, many brands include it at negligible levels (under 0.05%) just for 'label appeal.' While effective for fragrance at these levels, its antimicrobial and skin-conditioning benefits require concentrations closer to 0.2%–0.5%.


The Formula

Solubility
Oil
Optimal pH 4.5 – 7
0 7 14

Stability

Highly volatile and prone to oxidation; must be incorporated during the cool-down phase below 40°C. Requires light-protected, airtight packaging.

Synergies

  • Antioxidants (Vitamin E) to prevent terpene oxidation
  • Other antimicrobial botanicals

Conflicts

  • Strong oxidizing agents
  • PVC packaging materials

Safety

CIR Status
Not reviewed
Max tested
5%
Pregnancy
Safe
Sensitization risk Moderate

Contains naturally occurring Limonene (approx. 1%). To minimize sensitization risk, leave-on products should ideally remain under 1%.


Your Skin

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Moderate
Comedogenicity Low

Our Assessment

Valuable

A sophisticated botanical oil that provides both aromatic appeal and functional antimicrobial benefits when used at controlled, sub-1% concentrations.


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