Science
Mechanism of Action
This ingredient utilizes a cationic diethonium group to selectively anchor onto negatively charged, damaged protein surfaces. Once attached, its cetearamidoethyl component mimics 18-methyleicosanoic acid (18-MEA)—the essential F-layer of the skin—effectively creating a protective, moisture-binding film that reinforces barrier integrity and mitigates inflammatory responses.
Research
Clinical Evidence
High confidence2%
Key findings
- 01 Clinical application of 2% keratin hydrolysates demonstrated a 14%–23% improvement in stratum corneum hydration levels.
- 02 Studies indicated a significant 26%–46% reduction in trans-epidermal water loss (TEWL) following regular use.
- 03 Research on Vegetamide 18MEA confirms the restoration of the hydrophobic F-layer barrier after 20 consecutive treatments.
Transparency
Dusting Analysis
While many formulas include keratin for marketing 'claim' value at negligible percentages (0.1% or less), clinical data suggests that a minimum of 0.6% is required to actively restore the hydrophobic barrier, with 2% being the benchmark for significant hydration improvements.
The Formula
Formulation
Stability
Maintains excellent stability within standard cosmetic pH ranges; typically integrated via a glycerin-water carrier system.
Synergies
- Glycerin
- Other biomimetic lipids
- Non-ionic surfactants
Conflicts
- Strong anionic surfactants (may cause precipitation)
- Environments with pH levels exceeding 8.0
Safety
Safety Profile
The CIR Expert Panel confirmed the safety of hydrolyzed keratin derivatives in 2016, with leave-on concentrations tested safely up to 25%.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An exceptional biomimetic agent for restoring the skin's lipid barrier and significantly reducing water loss when formulated at clinical concentrations.
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References
Sources