Science
Mechanism of Action
By forming a thin, non-greasy occlusive film, Cetyl Stearate reinforces the skin's natural lipid barrier and significantly reduces transepidermal water loss (TEWL). Beyond its moisturizing capabilities, it acts as a structural agent, enhancing formula viscosity and ensuring a smooth, luxurious application experience.
Research
Clinical Evidence
High confidence5%
Key findings
- 01 A 1.5% concentration in topical formulations was clinically validated as non-irritating to both skin and ocular tissue.
- 02 High-concentration testing at 50% in mineral oil demonstrated only mild irritation in approximately 9% of subjects, confirming high biocompatibility at standard cosmetic levels.
Transparency
Dusting Analysis
As a functional texture enhancer and emollient, Cetyl Stearate is rarely 'dusted' for marketing claims; however, concentrations below 1% may provide insufficient occlusivity for therapeutic barrier repair.
The Formula
Formulation
Stability
Highly stable across a broad pH range; maintains peak structural integrity near pH 5.5 in emulsions. Requires careful temperature management during cooling to prevent crystallization.
Synergies
- Oil-phase lipids
- Mineral oil
- Fatty alcohols
Conflicts
- Strong oxidizing agents
- High-shear cooling processes
Safety
Safety Profile
Recognized by the CIR Expert Panel as safe for cosmetic use; also classified by the FDA as an indirect food additive.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An excellent emollient for dry and sensitive skin profiles, though its high comedogenicity makes it unsuitable for acne-prone individuals.
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References
Sources