Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle

CRYPTOMERIA JAPONICA LEAF OIL.

Valuable CAS 91771-60-7 / FRAGRANCE, PERFUMING

An aromatic essential oil derived from Japanese Cedar foliage, prized for its dual-action ability to neutralize oxidative stress and suppress blemish-causing pathogens. This botanical powerhouse serves as a precision tool for refining skin texture while reinforcing the natural lipid barrier.

Antioxidant Soothing Agent Antimicrobial Skin Conditioning

Science

It functions as a multi-modal bio-active, utilizing its terpene-rich profile to inhibit pro-inflammatory cytokines such as TNF-alpha and IL-6. Additionally, it exerts selective antimicrobial pressure against Propionibacterium acnes and Staphylococcus epidermidis while providing antioxidant protection to prevent the peroxidation of surface lipids.


Research

High confidence
Effective range 0.016–1%
Optimal

0.25%

Key findings

  1. 01 Demonstrated dose-dependent inhibition of nitric oxide and pro-inflammatory mediators in LPS-activated pathways (Yoon et al., 2009).
  2. 02 Significant in vitro antibacterial activity against acne-triggering bacteria at concentrations as low as 0.016% (Moiteiro et al., 2013).
  3. 03 Observed antioxidant capacity (EC50) through DPPH and ABTS assays, confirming free radical scavenging potential (Lima et al., 2024).

Transparency

Commonly dusted
Min. effective
0.01%
Red flag below
0.005%

Because it is an essential oil with therapeutic activity at very low thresholds (under 0.1%), it is frequently 'dusted' in formulas at trace levels solely for fragrance or label claims. At Moumoujus, we look for levels above 0.016% to ensure actual antibacterial benefit.


The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

High volatility and susceptibility to oxidation; requires storage in opaque, airless packaging and the inclusion of stabilizing antioxidants like Tocopherol.

Synergies

  • Vitamin E
  • Salicylic Acid
  • Squalane

Safety

CIR Status
Not reviewed
Max tested
1%
Sensitization risk Moderate

In vitro data suggests moderate toxicity to human keratinocytes at concentrations exceeding 0.01% in pure form; however, topical diluted use is generally well-tolerated. Patch testing is advised for those with reactive skin.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Valuable

A sophisticated botanical oil that provides targeted anti-inflammatory and antibacterial benefits for blemish-prone and stressed skin.


Related

Finding similar ingredients…