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Moumoujus

JUNIPERUS SIBIRICA NEEDLE EXTRACT.

Insufficient Data / HAIR CONDITIONING, HUMECTANT, SKIN CONDITIONING

Juniperus Sibirica Needle Extract is a botanical active characterized by its rich content of polyphenols and volatile terpenes. It robustly demonstrates significant antioxidant and anti-inflammatory properties, particularly through the inhibition of key inflammatory mediators. While direct human efficacy studies for this specific extract are limited, related juniper species show promising antibacterial capabilities and potential for skin brightening benefits.

Summary

Antioxidant Anti-inflammatory Antibacterial Skin conditioning agent Sebum control Humectant Fragrance

Science

Mechanism of Action

JUNIPERUS SIBIRICA NEEDLE EXTRACT operates through multifaceted biological pathways. It exhibits potent antioxidant effects by efficiently scavenging various free radicals, including DPPH, hydroxyl, superoxide anion, and nitric oxide radicals, and by demonstrating significant reducing power. Its anti-inflammatory activity involves the inhibition of COX-1 (IC50 1.29 mg/mL) and 12-LOX (IC50 1.34 mg/mL) enzymes. Furthermore, akin to Juniperus communis L. Needle Extract, it may suppress inflammatory signaling by decreasing NF-κB activity and reducing the levels of pro-inflammatory cytokines, specifically interleukin-1β and interleukin-18. These effects are attributed to the synergistic action of its abundant polyphenols, such as flavonoids (e.g., quercetin derivatives, catechins), and volatile terpenes, which collectively protect cellular biomolecules from oxidative damage. Additionally, related juniper extracts have demonstrated antibacterial properties, potentially aiding in the management of acne and skin inflammation, and may contribute to balancing the skin's oil production.

Research

Clinical Evidence

Medium confidence
Effective range 0.08–5%
Optimal

N/A

Key findings

  1. 01 Potent anti-inflammatory effect, inhibiting COX-1 (IC50 1.29 mg/mL) and 12-LOX (IC50 1.34 mg/mL) in *in vitro* assays, comparable to BHT.
  2. 02 Significant antioxidant activity observed in DPPH radical scavenging assays across a concentration range of 0.08-5.0 mg/mL.
  3. 03 Related *Juniperus communis* and *Juniperus oxycedrus* needle extracts demonstrated antibacterial activity against *Bacillus spp., Escherichia coli*, and *Staphylococcus aureus* at 50 mg/mL, with a Minimum Inhibitory Concentration (MIC) of 25.00 mg/mL against *Staphylococcus aureus*.
  4. 04 A human clinical study using an emulsion with 1% *Juniperus communis* fruit extract (not needle extract) improved skin brightness (increased L-value), reduced yellowness (b-value), and decreased spot visibility over 4 weeks by enhancing proteasome activity and suppressing lipofuscin accumulation.

Transparency

Dusting Analysis

Not commonly dusted

No specific data regarding 'dusting' (under-dosing to save cost) for Juniperus sibirica Needle Extract has been identified in the available research.

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Extraction studies indicate solubility in polar organic solvents such as methanol and ethanol. For effective incorporation into aqueous formulations, the extract may require co-solvents or surfactants, as demonstrated by successful dissolution in a mixture of 25% acetone (v/v) and 1% Tween-80 (v/v) for antibacterial assessments. As an 'extract', it can generally be prepared using various solvents including water, alcohol, or carbon dioxide, which will influence its specific solubility profile.

Synergies

  • The extract's intrinsic blend of polyphenols and volatile terpenes act synergistically to enhance its antioxidant and anti-inflammatory properties.

Safety

Safety Profile

CIR Status
Insufficient data
Pregnancy
Caution
Sensitization risk Unknown

The Cosmetic Ingredient Review (CIR) has concluded that data are insufficient to support the safety of Juniperus extracts, including *Juniperus communis Extract*, in cosmetic formulations, specifically noting a lack of genotoxicity data. While clinical tests on juniper oils have generally shown no evidence of irritation or sensitization, some evidence of sensitization to *Juniperus Oxycedrus Tar* has been observed. Notably, *Juniperus communis Extract* affected fertility and was abortifacient in studies using albino rats, raising a significant caution for the genus during pregnancy. The CIR explicitly calls for additional specific data, including current concentration of use, function, manufacturing methods, impurities, UV absorption, photosensitization, dermal reproductive/developmental toxicity, genotoxicity, and irritation/sensitization for each individual juniper extract to establish definitive safety.

Your Skin

Skin Compatibility

Yes Normal
No Dry
Yes Oily
Yes Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Insufficient Data

While *in vitro* studies for Juniperus Sibirica Needle Extract demonstrate promising antioxidant and anti-inflammatory effects, and related juniper extracts show broader benefits, the Cosmetic Ingredient Review indicates insufficient safety data specifically for this extract to provide a definitive recommendation.

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