Science
Mechanism of Action
Functioning primarily as a rheology modifier, Polyamide-3 precisely controls the viscosity of low to high polarity organic liquids, enabling the formation and stabilization of emulsions with reduced reliance on traditional emulsifiers. It creates unique shear-thinning emulsions that impart a desirable sensory feel and contribute to enhanced skin hydration. As a robust film-former, it increases formulation wear time, delivering water and wear resistance crucial for color cosmetics and sun care, while also stabilizing inorganic UV filters. Its capacity to thicken oils without introducing opacity and to form stable gelled oil-in-water and water-in-gelled-oil emulsions demonstrates its profound formulation flexibility, irrespective of pH.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polyamide-3 demonstrates exceptional stability, effectively stabilizing emulsions across a broad pH range. It is particularly noted for its ability to form stable gelled oil-in-water and water-in-gelled-oil emulsions that are insensitive to pH variations.
Conflicts
- While generally compatible, some hydrophobic polyamides may exhibit reduced compatibility with ethanol, potentially leading to hazy mixtures. However, Polyamide-3 is specifically utilized in ethanol-based gels and sprays, suggesting this concern is minimized or overcome in its specific application.
Safety
Safety Profile
Polyamide-3 is regarded as safe for cosmetic applications, presenting minimal concerns regarding allergies and toxicities. It is not listed on EWG's Skin Deep Restricted or Unacceptable Lists, and there are no specific FDA restrictions or prohibitions concerning its use in cosmetics.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polyamide-3 is a valuable formulation enhancer, crucial for creating stable, cosmetically elegant products with extended wear, uniform active delivery, and enhanced sensory properties, suitable for all skin types.
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