QUATERNIUM-51

Other

75

Good

CAS Number: 1463-95-2

About QUATERNIUM-51

A conditioning quaternary ingredient that helps skin hold onto a smoother, more hydrated feel.

Detailed Analysis

Quaternary conditioning agents carry a permanent positive charge, which helps them deposit on negatively charged surfaces and form a soft conditioning film. They are usually used at low levels and are not major systemic hazards, but they can irritate eyes and sensitive skin more than inert oils. Their main value is surface feel and barrier-like conditioning.

What It Does

ANTISTATIC

Skin Benefits

  • ✓ Conditioning support
  • ✓ Barrier support

Known Concerns

  • ⚠ Quaternary conditioning agents can irritate eyes and sensitive skin.
  • ⚠ Public data is thinner than for simpler moisturizers.

Safety Score

75

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.