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COIX LACRYMA-JOBI SEED OIL.

Valuable / SKIN CONDITIONING

A nutrient-dense botanical lipid derived from Job's Tears, prized for its ability to reinforce the skin's moisture barrier while providing bioactive soothing. This versatile oil integrates high-performance antioxidants with essential fatty acids to promote a clarified and resilient complexion.

Skin Conditioning Antioxidant Anti-inflammatory Antibacterial Moisturizer Soothing

Science

This oil functions as a biomimetic emollient that replenishes the intercellular lipid matrix, effectively sealing in hydration and reducing trans-epidermal water loss. Its unique chemical profile—rich in coixol, flavonoids, and phytosterols—exhibits multi-pathway activity, including the inhibition of pro-inflammatory cytokines like IL-31 and the neutralization of oxidative stress, while providing secondary antimicrobial defense against common surface pathogens.


Research

Medium confidence
Effective range 6.25–12.5%
Optimal

N/A

Key findings

  1. 01 In vitro analysis demonstrated that concentrations as low as 6.25 mg/ml effectively inhibited the proliferation of multiple bacterial strains, including P. aeruginosa and S. pneumoniae.
  2. 02 Research indicates that specific isolates like coixol provide potent anti-allergic effects by suppressing histamine release.
  3. 03 Cellular studies at 10 µM suggest potential metabolic benefits in lipid regulation and protein expression related to oxidative protection.

Transparency

Commonly dusted
Min. effective
1%
Red flag below
0.1%

Due to its exotic botanical status and higher raw material cost, it is frequently used at 'claim' levels (below 0.1%) to market traditional benefits without providing meaningful lipid replenishment or antimicrobial protection.


The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Contains a high proportion of unsaturated fatty acids; should be stabilized with antioxidants like Tocopherol to prevent rancidity and oxidative degradation.

Synergies

  • Vitamin E
  • Ceramides
  • Squalane

Safety

CIR Status
Insufficient data
Pregnancy
Safe
Sensitization risk Low

While the CIR Expert Panel requested more specific fatty acid profile data for formal classification, EWG assessments and historical cosmetic use indicate a low toxicological profile for topical application.


Your Skin

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

Our Assessment

Valuable

A sophisticated botanical lipid that bridges the gap between basic occlusion and active skin-soothing, though its efficacy is highly dependent on formulation concentration.


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