Science
Mechanism of Action
Triricinolein acts by creating an occlusive barrier on the skin's stratum corneum, which physically limits the evaporation of endogenous water. This mechanism helps to maintain the skin's moisture balance, leading to improved hydration, softness, and suppleness. It also contributes to the sensory and rheological properties of cosmetic products.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
Triricinolein primarily serves as a functional ingredient, providing emollient, moisturizing, and viscosity-controlling benefits. These roles typically necessitate its presence in concentrations sufficient to achieve the desired physical and sensory properties within a formulation, thereby minimizing its susceptibility to being 'dusted' for superficial marketing claims.
The Formula
Formulation
Stability
Triricinolein is hydrophobic and exhibits primary solubility in oil-based systems. It is prone to hydrolysis, a reaction that can be catalyzed under both highly acidic and highly alkaline pH conditions, indicating potential instability at extreme pH ranges and requiring careful formulation considerations.
Conflicts
- Extreme acidic or alkaline pH values, which can lead to its degradation via hydrolysis.
- Formulations containing active pharmaceutical ingredients or other chemicals whose dermal absorption requires careful control, as triricinolein may enhance skin penetration of co-formulated compounds.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that triricinolein is safe for use in cosmetics, a determination reaffirmed after a re-review initiated in 2017. Glyceryl triesters, including triricinolein, are typically incorporated into cosmetic products at concentrations ranging from a few tenths of a percent up to 46%. Castor oil, a primary source containing triricinolein, is 'Generally Recognized As Safe' (GRAS) by the FDA as a stimulative laxative. Additionally, ricinoleic acid, a component of triricinolein, conforms to specific FDA regulations concerning plastic materials in contact with food.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Triricinolein is a valuable emollient and moisturizer, effectively improving skin hydration and product texture with a well-established safety profile for general cosmetic use.
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References
Sources