Science
Mechanism of Action
This ingredient operates as a biomimetic occlusive, creating a hydrophobic crystalline lattice over the stratum corneum. By filling the interstitial gaps between corneocytes, it effectively minimizes transepidermal water loss (TEWL) while simultaneously reinforcing the structural integrity of the product matrix.
Research
Clinical Evidence
High confidence10%
Key findings
- 01 Clinical evaluations conducted by the CIR indicate that long-chain fatty acids in this category are safe and effective at concentrations up to 22%, particularly in anhydrous stick formulations.
- 02 Case studies involving 10% concentrations highlighted the necessity for high-purity sourcing, as rare sensitization was observed in compromised skin (dermatitis) while remaining inert in healthy control subjects.
Transparency
Dusting Analysis
Because it is often used for its textural and structural properties, it is rarely 'dusted' for marketing purposes. However, concentrations below 1% may not provide the meaningful barrier protection or viscosity control required for therapeutic efficacy.
The Formula
Formulation
Stability
Exhibits superior oxidative stability due to its saturated long-chain structure. It remains stable across a broad pH range in emulsions but is primarily used in anhydrous systems where pH is not a factor.
Synergies
- Hydroxystearic Acid
- Behenic Acid
- Squalane
- Ceramides
Conflicts
- Strong oxidizing agents
- Highly polar solvents
- Strong bases (risk of saponification)
Safety
Safety Profile
Safe for cosmetic use when formulated to be non-irritating. Sensitization is extremely rare and typically only seen in individuals with pre-existing severe dermatitis.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An excellent, stable lipid component for reinforcing the skin barrier and optimizing the physical delivery of stick-based and rich cream formulations.
Related
Similar Ingredients
Finding similar ingredients…