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MAGNESIUM PEG-3 COCAMIDE SULFATE

CAS -
72

Safety score · 0–100

Fine

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

About

A magnesium salt of a sulfated PEG-3 cocamide, this surfactant is gentler than traditional alkyl sulfates but can cause mild eye irritation and contains potential sulfation residuals at low concentrations.

Magnesium PEG-3 Cocamide Sulfate is an amphoteric surfactant derived from coconut oil amides and polyethylene glycol, complexed with magnesium. It functions as a cleansing and foaming agent in cosmetic formulations. The PEG-3 ethoxylation introduces some mild skin conditioning properties, though the sulfation step can leave trace reactive by-products. Under EU cosmetics regulation (CosIng), sulfated surfactants are permitted but must be manufactured to high purity standards to minimize residual unreacted sulfating agents, which may cause mild irritation in sensitive individuals.

Skin benefits

  • Effective cleansing and foaming agent
  • Mild amphoteric surfactant suitable for sensitive skin formulations
  • PEG-3 moiety provides some skin conditioning effect
  • Magnesium salt form is typically gentler than sodium sulfate counterparts

Known concerns

  • Mild skin and eye irritation potential at high concentrations
  • Trace sulfation by-products may cause sensitivity in reactive skin types
  • PEG contamination concerns at low quality grades

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 — always read the physical product label and consult a healthcare professional for personal concerns.