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Moumoujus

OCTATRIENOIC ACID.

Valuable CAS 5205-32-3 / ANTIOXIDANT

Octatrienoic acid is a beneficial fatty acid offering comprehensive support for skin health. It acts as a potent antioxidant and anti-inflammatory agent, providing protection against environmental aggressors while enhancing skin barrier function and promoting an even, revitalized complexion.

Summary

Antioxidant Skin-conditioning Anti-inflammatory UV protection Melanin synthesis promotion Skin barrier support Moisturizing Emollient

Science

Mechanism of Action

This ingredient functions through several key pathways: it serves as a powerful antioxidant, boosting the skin's natural catalase activity, and exhibits anti-inflammatory properties. It activates peroxisome proliferator-activated receptor gamma (PPARγ), which is crucial for protecting human keratinocytes from ultraviolet radiation (UVR)-induced damage. As a fatty acid, it contributes to skin conditioning, emollient, and moisturizing effects, thereby strengthening the skin barrier, improving elasticity, and addressing visible signs of aging. Additionally, it promotes melanogenesis by up-regulating tyrosinase and microphthalmia-associated transcription factor, leading to increased melanin content in the epidermis.

Research

Clinical Evidence

High confidence
Effective range 0.1–0.3%
Optimal

0.1%

Key findings

  1. 01 Topical application of 0.1% octatrienoic acid protected against sunburn cell formation, reduced apoptotic keratinocytes, and mitigated UV radiation damages.
  2. 02 A medical device containing 0.3% octatrienoic acid, when combined with 15% urea and applied daily for 3 months, led to a significant reduction in Grade III Actinic Keratosis lesions, with complete clearance observed in 56.7% of subjects during a 3-month follow-up.
  3. 03 A topical cream containing octatrienoic acid (concentration unspecified), applied twice daily for 60 consecutive days, resulted in overall clinical improvement in approximately 90% of subjects with mild to moderate actinic keratosis, including 20% achieving complete remission.

Transparency

Dusting Analysis

Not commonly dusted

There is no evidence to suggest octatrienoic acid is commonly 'dusted' in formulations. Clinical studies indicate efficacy at low, precise percentages, validating its inclusion based on targeted benefits.

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Octatrienoic acid itself acts as an antioxidant, helping to mitigate oxidation-driven deterioration and enhance formula stability. Successful formulation requires appropriate solubilization due to its oil solubility, and comprehensive stability validation under realistic conditions. It is typically used at low levels, ranging from 0.01% to 0.10% for general leave-on or rinse-off skincare, and 0.02% to 0.15% in lipid-rich systems for an antioxidant boost. Stability in surfactant-based products should be verified, and any potential impact on odor or color should be monitored, especially when combined with other antioxidant systems like tocopherol.

Synergies

  • Tocopherol (for enhanced antioxidant systems)

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

Octatrienoic acid has not undergone specific review by the Cosmetic Ingredient Review (CIR) Expert Panel or the Scientific Committee on Consumer Safety (SCCS). In the U.S., cosmetic products and ingredients are not typically subject to pre-market FDA approval.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Octatrienoic acid is a valuable fatty acid recognized for its significant antioxidant and UV protective benefits, alongside its ability to improve skin tone and barrier health, making it a strong asset for precision skincare formulations.

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