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Hair-conditioning agent (ester quaternary ammonium)

MYRISTOYL ETHYLTRIMONIUM METHOSULFATE

CAS 851385-90-5
66

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

Myristoyl ethyltrimonium methosulfate is an ester-quat hair conditioner that softens hair and cuts static. It is generally well tolerated in rinse-off products, with usual quaternary ammonium caveats at high levels.

Function

CLEANSING, SURFACTANT - CLEANSING

Skin benefits

  • Conditioning agent for hair and skin
  • Reduces static and improves combability
  • Compatible with mainstream surfactant systems
  • Low irritation in rinse-off use

Known concerns

  • Quaternary ammonium structure carries some ocular and skin irritation risk at high levels
  • Limited independent ingredient-specific safety data
  • Possible bioaccumulation considerations for ester-quats
  • Sensitisation potential in compromised skin

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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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.