Science
Mechanism of Action
Polyamide-2 operates by depositing a flexible, continuous film across the surface of the skin, hair, or nails. This polymeric layer acts as a physical barrier, aiding in moisture retention and improving product adherence. When incorporated into hair care, it specifically functions as a UV-absorbing agent, effectively shielding hair fibers from both UV-A and UV-B radiation to prevent structural degradation.
Research
Clinical Evidence
Medium confidence1%
Key findings
- 01 Provides broad-spectrum UV-A and UV-B protection to hair, safeguarding the hair fiber structure against sun damage.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Exhibits excellent stability and functionality across a broad pH range, specifically between 4 and 10, facilitating versatile formulation.
Safety
Safety Profile
The CIR Expert Panel has concluded that nylon polymers, including Polyamide-2, are safe for cosmetic use within current practices and concentrations, primarily due to their large molecular size which limits skin penetration. Polyamide-2 itself has been reported to possess an excellent toxicity profile. General polyamides are classified as non-acutely toxic, non-corrosive/irritant to skin or eyes, non-sensitizing, non-mutagenic, non-carcinogenic, and non-reproductive toxic. Furthermore, it does not contain endocrine disruptors at concentrations of 0.1% or greater.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polyamide-2 is a safe and versatile film-former, offering proven UV protection specifically for hair, and can enhance product formulation, although specific clinical efficacy data for skin beyond film formation is limited in current research.
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References
Sources