Quaternary conditioning agent
QUATERNIUM-43
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 smooths the hair cuticle and reduces static. Typically used at low levels in shampoos and conditioners as a supporting conditioning agent.
Skin benefits
- Conditioning and antistatic effect
- Adds slip in rinse-off conditioners
- Works at low concentrations
- Compatible with anionic surfactants
Known concerns
- Limited public toxicology data
- Eye irritation potential
- Quat residue 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.