Science
Mechanism of Action
This long-chain alkyl dimethicone functions by forming a flexible, water-resistant film that significantly inhibits trans-epidermal water loss (TEWL) without being comedogenic. Its unique molecular structure allows it to act as a coupling agent between silicone and organic oils, increasing the viscosity of the oil phase and ensuring a uniform distribution of active ingredients across the cutaneous barrier.
Research
Clinical Evidence
High confidence5%
Key findings
- 01 A clinical Human Repeated Insult Patch Test (HRIPT) involving 83 participants confirmed that at a 5% concentration, the ingredient is a non-sensitizer and non-irritant.
- 02 Toxicological assessments of the pure substance (100% concentration) indicate an LD50 > 2000 mg/kg, classifying it as non-toxic with zero irritation potential in acute dermal exposure.
Transparency
Dusting Analysis
As a structural wax and film-former, it is rarely 'dusted' because its primary value lies in its rheological impact; using it at microscopic levels would serve no functional purpose for the formula's texture or barrier performance.
The Formula
Formulation
Stability
Requires hot processing as it has a melting point of 60-70°C. Once integrated into the oil or silicone phase, it enhances the thermal stability of emulsions.
Synergies
- Hydrocarbon oils
- Volatile silicones
- UV filters (physical and chemical)
Conflicts
- Highly polar water phases
- Cold-process manufacturing
Safety
Safety Profile
Its high molecular weight prevents any significant dermal absorption, making it safe for long-term use. If used near the maximum 15% threshold in ocular products, specific irritation testing is advised.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An exceptional texture enhancer and barrier protector that provides the occlusion of a wax with the premium, breathable feel of a silicone.
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References
Sources