Polyquaternium-4

Primary Function

Stabilizer

Safety Verdict

Mixed

Health Score

6/10

Eco Score

5/10

About Polyquaternium-4

Polyquaternium-4 functions primarily as a stabilizer in cosmetic formulations. maintains formula consistency, prevents oxidation, and extends shelf stability. It is commonly used in vitamin C serums, retinol treatments, anti-aging creams, and sunscreens for protecting delicate active ingredients from degrading due to light, air, or heat.

Formulation Role & Skin Benefits

Polyquaternium-4 is selected for formulations requiring protecting delicate active ingredients from degrading due to light, air, or heat, delivering ensuring your product works as effectively on the last day as the first.

Best suited for all skin types, essential for high-performance and antioxidant formulas. Typical formulation context: antioxidant serums, vitamin C formulas, retinol creams, and emulsions.