Polyquaternium-7 is a cationic synthetic copolymer used in skincare and hair care as a conditioning agent and film former, imparting smoothness, reducing static, and enhancing sensory feel. It is a formulation ingredient rather than a therapeutic active.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin or eye irritation | Rare | Generally well tolerated; transient irritation possible, more often associated with eye contact in rinse-off products. |
| Allergic contact dermatitis | Very rare | Sensitization reports are uncommon and typically linked to residual monomers or co-formulants. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.