Science
Mechanism of Action
This ingredient forms a breathable, hydrophobic film over the stratum corneum, creating a physical barrier that traps moisture and prevents trans-epidermal water loss (TEWL). Its branched molecular architecture (isoalkane) allows for superior spreadability and a more elegant, non-greasy skin feel compared to linear alkanes, while also serving as a stable carrier for oil-soluble active ingredients.
Research
Clinical Evidence
High confidence10%
Key findings
- 01 Clinical assessments cited by the Cosmetic Ingredient Review (CIR) demonstrate that concentrations between 5% and 15% significantly lower TEWL and enhance the resilience of the skin barrier without inducing irritation.
Transparency
Dusting Analysis
While often used at lower levels purely as a texture enhancer or solvent, concentrations below 5% may not provide the full clinical barrier-reinforcement benefits observed in safety assessments.
The Formula
Formulation
Stability
Highly chemically inert and resistant to oxidation. It remains stable across extreme temperature fluctuations and a wide pH spectrum due to the lack of reactive functional groups.
Synergies
- Oil-soluble vitamins
- Ceramides
- UV filters
Conflicts
- Strong oxidizing agents
Safety
Safety Profile
The CIR Expert Panel confirms its safety in cosmetic practices. While industrial-grade exposure to pure isoalkanes can cause dryness, cosmetic-grade applications are non-sensitizing and non-irritating.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An exceptionally stable and elegant emollient that provides reliable barrier support and moisture retention for all skin types.
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References
Sources