Science
Mechanism of Action
This ester functions primarily as an emollient and skin conditioning agent. It creates a semi-occlusive layer on the skin's surface, which significantly reduces transepidermal water loss (TEWL), thus maintaining skin hydration, enhancing plasticity, and improving the overall condition of the stratum corneum. Additionally, it has been observed to alleviate discomfort associated with dry skin and can facilitate the dermal penetration of other active ingredients.
Research
Clinical Evidence
Medium confidence10%
Key findings
- 01 A study evaluating oil compositions in emulsions demonstrated that a formulation containing 10% Isononyl Isononanoate (a closely related ester) provided significant moisturizing effects and exhibited rapid absorption into the skin upon spreading.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Isodecyl Isononanoate demonstrates robust stability under normal conditions, exhibiting resistance to oxidation and hydrolysis, which supports its long-term integrity in cosmetic formulations. To preserve its stability, it is advisable to avoid exposure to extreme heat, specifically temperatures exceeding 80°C. Its inherently low freezing point is advantageous for maintaining product stability in colder environments.
Synergies
- Enhances penetration of other ingredients
Conflicts
- Extreme heat (above 80°C)
- Certain reactive chemicals
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Isodecyl Isononanoate, along with other alkyl esters, is safe for use in cosmetic formulations, provided products are formulated to be non-irritating. Studies indicate that these ester compounds are not genotoxic, dermal irritants, or sensitizers. While the SCCS has not specifically reviewed this ingredient, the CIR Panel advises formulators to exercise caution, as these compounds may increase the dermal penetration of other ingredients. Pelargonic Acid, a precursor from which Isodecyl Isononanoate is derived, is recognized by the FDA as a synthetic flavoring substance permitted for direct addition to food.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Isodecyl Isononanoate is a valuable emollient, offering broad skin compatibility and enhancing ingredient delivery, while effectively moisturizing and softening the skin without leaving a heavy or greasy residue.
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References
Sources