QUATERNIUM-63

Conditioning Agent

72

Good

CAS Number: 103051-46-3

About QUATERNIUM-63

A natural resin-based ingredient that helps stabilize products — derived from pine tree rosin, but rosin derivatives can sometimes cause skin sensitization.

Detailed Analysis

QUATERNIUM-63 is a cationic conditioning ingredient used for antistatic, hair conditioning. Its positive charge helps it adsorb onto negatively charged hair or skin surfaces, improving slip and reducing static, but that same surface activity can irritate eyes and sometimes sensitive skin. Quaternary ammonium ingredients also raise some environmental persistence concerns as a class.

What It Does

ANTISTATIC HAIR CONDITIONING

Skin Benefits

  • ✓ Leaves a smooth after-feel

Known Concerns

  • ⚠ May irritate eyes or very sensitive skin

Safety Score

72

Good

Based on EU regulatory data, published safety research, and ingredient function analysis.

References

🏛

EU CosIng Database

European Commission cosmetic ingredient registry

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This information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.