Quaternary conditioning agent
QUATERNIUM-77
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A numbered quaternium conditioning ingredient that gives hair softness, slip, and reduced static during washing and styling. Most commonly seen in rinse-off conditioners and shampoos.
Skin benefits
- Hair conditioning and antistatic
- Smooths cuticle in rinse-off use
- Functional at low levels
- Pairs well with cleansing surfactants
Known concerns
- Limited published toxicology
- Eye irritation potential
- Possible buildup on porous hair
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related quaternary conditioning agents
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.