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Moumoujus

CHAMAECYPARIS OBTUSA OIL.

Valuable CAS 91745-97-0 / FRAGRANCE, TONIC

Commonly known as Hinoki Cypress oil, this botanical extract serves as a potent multi-functional active that bridges the gap between traditional forest therapy and precision dermatology. It is characterized by its high concentration of volatile terpenes which provide significant antimicrobial, anti-inflammatory, and collagen-preserving benefits.

Summary

soothing antimicrobial antioxidant masking skin-conditioning

Science

Mechanism of Action

This oil functions by suppressing key inflammatory mediators including COX-2, PGE2, and TNF-alpha, while inhibiting the NF-κB signaling pathway to calm skin distress. It acts as a natural antimicrobial by disrupting bacterial cell membranes and preventing biofilm formation, and it protects skin structural integrity by blocking matrix metalloproteinases (MMP-1, MMP-3) while stimulating Type I procollagen synthesis.

Research

Clinical Evidence

High confidence
Effective range 0.1–5%
Optimal

3%

Key findings

  1. 01 Lactobacillus-fermented extract reduced inflammatory acne by 65.3% over 8 weeks, demonstrating higher efficacy than 5% tea tree oil.
  2. 02 Topical application at 3.0% significantly stimulated hair growth factors VEGF and IGF-1 in vivo.
  3. 03 Concentrations as low as 0.1 mg/mL showed potent inhibition of MRSA growth and virulence gene expression.

Transparency

Dusting Analysis

Commonly dusted
Min. effective
0.5%
Red flag below
0.1%

Often included at trace amounts for its 'forest-bathing' scent or marketing appeal; however, clinical data suggests concentrations above 1% are necessary for meaningful anti-acne and hair-growth results.

The Formula

Formulation

Solubility
Oil
Optimal pH 4.5 – 7
0 7 14

Stability

The raw oil is naturally acidic (pH ~2.64) and highly volatile. It is prone to oxidation when exposed to light or air, requiring airtight, UV-protective packaging to maintain its terpene profile (sabinene and alpha-pinene).

Synergies

  • Tea Tree Oil (enhanced antimicrobial action)
  • Niacinamide (synergistic pore-refining and barrier support)
  • Lactobacillus Ferment (increased bioavailability for acne-prone skin)

Conflicts

  • Strong oxidizing agents
  • High-heat processing (degrades volatile terpenes)
  • Aqueous formulas without proper solubilizers

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
5%
Sensitization risk Moderate

While generally safe, the presence of natural limonene and longifolene may cause sensitization in reactive individuals. Recommended usage is capped at 5% per IFRA standards for fragrance concentrates.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

An exceptional botanical active for acne management and scalp health that outperforms tea tree oil in clinical trials when formulated at precise concentrations.

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References

Sources