Polyquaternium-4 is a water-soluble cationic polymer known for forming clear, flexible films on hair and skin. Styling sprays, gels, and lotions use it for light hold, reduced static, and better manageability and overall look.
A conditioning polymer that gives hair light hold without stiffness.
Category
Skin Conditioning, Tone/Texture
Type
Film Former
Ratings
Overall Rating
Good
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Polyquaternium-4 a Good Ingredient?
Rated Good for reliably providing light hold and anti-static control as a water-soluble cationic film that remains flexible and comfortable. It’s broadly used with a good tolerability profile in rinse-off and leave-in formats.
What it does
Skin Benefits
Keeps hairstyles looking neat without stiffness and helps tame flyaways. Leaves hair feeling smoother and easier to shape.
Where you'll find it
Uses in Skincare & Cosmetics
Frequently used in hair sprays, styling gels, and setting lotions; also found in lightweight leave-in creams for touchable control.
Before you use it
Safety
Low overall irritation risk, though cationic polymers can occasionally cause mild stinging or redness, especially near eyes. Rinse-off use further minimizes potential sensitivity; patch test for leave-ins if prone to irritation.