QUATERNIUM-33
Good
CAS Number: 72102-40-0 / 86221-07-0
About QUATERNIUM-33
A lanolin-derived conditioning agent — reduces frizz and conditions hair with a protective film. Generally safe, but carries lanolin's sensitization risk for some people.
Detailed Analysis
Quaternium-33 (CAS 72102-40-0 / 86221-07-0) is a quaternary ammonium compound derived from lanolin fatty acids. Functions as an antistatic, film-forming, and conditioning agent for hair and skin. Low comedogenicity (rating 1). EU-approved and may be subject to SCCS-assessed restrictions. EWG rates low-moderate concern for allergies/immunotoxicity. As a lanolin derivative, carries inherent sensitization risk for lanolin-sensitive individuals. Rare but possible skin irritation and contact dermatitis. Limited pregnancy/breastfeeding data.
Skin Benefits
- ✓ Reduces frizz and flyaways (antistatic)
- ✓ Conditions and softens hair
- ✓ Forms protective film on hair shaft
- ✓ Low comedogenicity for skin
Known Concerns
- ⚠ Lanolin derivative — sensitization risk for lanolin-allergic individuals
- ⚠ Low-moderate allergy/immunotoxicity concern per EWG
- ⚠ May cause contact dermatitis in rare cases
- ⚠ Limited data for pregnancy/breastfeeding
Safety Score
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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Download LuxSenseThis information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.