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CRYPTOMERIA JAPONICA STEM EXTRACT.

Valuable CAS 91771-60-7 / ANTIOXIDANT

Derived from the Japanese Cedar, this botanical powerhouse serves as a multi-functional biological shield, offering robust antioxidant protection and cellular restoration. It is particularly valued in precision skincare for its ability to refine skin texture while suppressing inflammatory pathways.

Antioxidant Anti-inflammatory Skin Conditioning Antibacterial Barrier Protection

Science

This extract operates through a complex profile of diterpenoids (like ferruginol) and polyphenols that neutralize free radicals and inhibit pro-inflammatory cytokines such as TNF-alpha and IL-6. It reinforces the dermo-epidermal integrity by acting as a conditioning agent, balancing the skin's microbiome via selective antibacterial activity, and modulating melanin biosynthesis to improve tonal clarity.


Research

Medium confidence
Effective range 0.001–1%
Optimal

0.5%

Key findings

  1. 01 In vitro analysis demonstrated that ferruginol concentrations as low as 6.3 to 12.5 µg/mL provide potent antibacterial effects against pathogenic strains.
  2. 02 Methanol-based extractions showed significant melanin biosynthesis inhibition at concentrations of 10-100 µg/mL, suggesting depigmenting potential.
  3. 03 Dose-dependent inhibition of nitric oxide and inflammatory cytokines (IL-1beta, IL-6) was observed in essential oil fractions.

Transparency

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

Due to its potent biological activity at micro-gram levels, many mass-market formulations include it at 'label-only' concentrations below 0.05%. To achieve therapeutic antioxidant or antibacterial benefits, concentrations should ideally align with levels used in efficacy studies.


The Formula

Solubility
Both
Optimal pH 4.5 – 6.5
0 7 14

Stability

The extract contains both hydrophilic and lipophilic bioactive compounds; extraction method (ethanol vs. water) significantly dictates the final chemical profile. Essential oil components are hydrophobic.

Synergies

  • Vitamin C
  • Niacinamide
  • Hyaluronic Acid

Safety

CIR Status
Not reviewed
Pregnancy
Safe
Sensitization risk Low

Generally well-tolerated, though individuals with specific evergreen allergies should perform a patch test due to the presence of natural terpenes.


Your Skin

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

Our Assessment

Valuable

An excellent botanical for modern urban defense, providing a sophisticated balance of anti-inflammatory and antimicrobial properties.


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