Quaternary conditioning agent
QUATERNIUM-78
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A numbered quaternary conditioning ingredient that bonds to hair through positive charge, smoothing the cuticle and reducing static. Most often seen as a co-conditioner in shampoos and rinse-off masks.
Skin benefits
- Conditioning quaternary ingredient
- Improves hair feel and manageability
- Antistatic effect
- Works in rinse-off products
Known concerns
- Sparse public safety data
- Eye irritation potential
- Class-level concerns over quat buildup
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.