What it is
Polyamide-8 is a synthetic polymer built from repeating amide-linked units. In formulations it is valued for its ability to thicken and gel oily or silicone-rich phases, giving products body and structure and helping suspend pigments and other particulates. This makes it useful in stick and balm sunscreens and color cosmetics where a stable, non-greasy texture is desired.
Safety & warnings
As a high-molecular-weight polymer, Polyamide-8 is not appreciably absorbed and is generally regarded as low-irritation and well tolerated in cosmetic use. It is not associated with notable allergenicity or comedogenicity in typical formulations.
Origin & sourcing
Synthetic; manufactured polymer produced by polymerization rather than derived from a natural source.
Questions everyone asks
Why is Polyamide-8 used in stick sunscreens?
It thickens and structures the oil and silicone phases, helping create a firm, stable stick or balm texture that holds pigments evenly.
Is Polyamide-8 a natural ingredient?
No, it is a synthetic polymer made by polymerization and used as a texture and structuring agent.