The ingredient, explained
Polyquaternium-16
Polyquaternium-16 is a copolymer of vinylpyrrolidone and quaternized vinylimidazole. It is used in conditioning and styling formulations, and supplied grades can differ in their charge density.
Explore connectionsIngredient guide
What it is and what it does
About this ingredient: BASF: Luviquat polymer chemistry and example formulations ↗
A verified formulation role is not on file for this name.
Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.
A closer look
What the research shows
We have not yet published a checked study for this exact ingredient. This is a gap in our coverage, not a finding that research does not exist or that the ingredient is ineffective.
Ingredient research is not proof that a product containing this ingredient works.
Follow the formula
Products containing this ingredient
From the wider catalogue. Linked by the ingredient list, without an efficacy ranking.
Names and identifiers
- INCI name on ingredient lists
- Polyquaternium-16
Sources for this ingredient record
- BASF: Luviquat polymer chemistry and example formulations ↗ · Recorded Sep 30, 2026
- EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗ · ODbL 1.0 (Open Beauty Facts database) · Recorded Aug 8, 2026



