Science
Mechanism of Action
This ingredient forms a refined, semi-occlusive barrier across the stratum corneum, significantly reducing transepidermal water loss (TEWL). Its branched hydrocarbon architecture allows it to lower the surface tension of thicker oils, enhancing spreadability and ensuring a uniform distribution of active ingredients across the skin's surface.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 A 2010 CIR Safety Assessment utilized 48-hour occluded patch tests on human subjects, confirming that C15-35 isoparaffins are non-sensitizing and non-irritating even at concentrations reaching 90%.
Transparency
Dusting Analysis
As a functional solvent and texture-enhancing emollient, this ingredient is typically used as a foundational component of the oil phase rather than a 'hero' active subject to marketing dilution.
The Formula
Formulation
Stability
Demonstrates exceptional chemical resilience; as a saturated hydrocarbon, it is virtually immune to oxidation, hydrolysis, and pH-driven degradation.
Synergies
- High-viscosity vegetable oils
- Mineral UV filters
- Lipophilic active delivery systems
Conflicts
- Highly polar solvents
- Strong oxidizing agents
Safety
Safety Profile
The 2010 CIR Expert Panel concludes this ingredient is safe for cosmetic use, noting its inert nature and lack of dermal reactivity.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An ultra-stable, non-irritating hydrocarbon that optimizes the tactile profile of oil-rich formulas while providing reliable moisture retention.
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References
Sources