What it is
Polyamide-5 is a synthetic polyamide (nylon-type) polymer used to gel and thicken the oil phase of cosmetic formulas. It helps build structure, suspend pigments and powders, and give a smooth, cushioned feel to products such as tinted sunscreens, balms, and color cosmetics. Its gelling ability makes it useful for stabilizing anhydrous and oil-rich formulas.
Safety & warnings
As a high-molecular-weight synthetic polymer, Polyamide-5 is essentially inert on skin and is generally well tolerated, with low irritation and sensitization potential at cosmetic use levels.
Origin & sourcing
Synthetic; a polyamide polymer of the nylon family.
Questions everyone asks
What does Polyamide-5 do in a tinted sunscreen?
It gels and thickens the oil phase, helping suspend pigments evenly and giving the product a smooth, structured feel.
Is Polyamide-5 a UV filter?
No. It is a gelling and texture polymer and does not absorb or reflect UV light.