Polyamide-3
What is Polyamide-3?
Polyamide-3 is a synthetic polymer belonging to the polyamide family, formed through condensation polymerization of diamines and dicarboxylic acids. It appears as a solid resin that dissolves in cosmetic solvents to create flexible films. Primarily featured in hair styling products like sprays and gels, as well as mascaras, eyeliners, and nail coatings, it excels as a film former and hair fixative. Upon application and solvent evaporation, it deposits a coherent, elastic film on hair shafts or lashes, delivering humidity-resistant hold, volume enhancement, and smooth finish without rigidity. Its opacifying properties can add subtle sheen or coverage in formulations. This ingredient integrates well in anhydrous systems, boosting durability and sensory appeal. Safety reviews from cosmetic expert panels affirm its suitability for typical rinse-off and leave-on uses, highlighting minimal absorption and stability.
Benefits
Forms durable, flexible films for extended hair styling hold
Supports non-comedogenic formulations safe for pore-prone areas
Improves product resistance to moisture and wear
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| Individuals seeking humidity-resistant hair styling | Those with rare sensitivities to synthetic polymers |
| Users of long-wear eye or nail makeup | Individuals preferring strictly natural cosmetic ingredients |
| People with normal to oily skin types | People experiencing contact dermatitis from film formers |
Safety Notes
- Low hazard rating from environmental health assessments
- Safe for cosmetic use per ingredient review panels
Frequently Asked Questions about Polyamide-3
What does Polyamide-3 do in cosmetics?
It acts as a film former, creating hold and structure on hair or lashes for lasting performance.
Is Polyamide-3 safe for skin?
It carries a low safety rating and is approved safe for use in cosmetics by expert panels.
Does Polyamide-3 cause irritation?
Evidence points to low irritation potential in typical formulations.