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METHYLENE GLYCOL

CAS 463-57-0 Updated
8

Safety score · 0–100

Avoid

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

About

Sounds harmless but it’s the water-bound form of formaldehyde — an IARC Group 1 carcinogen. Used in some hair-smoothing treatments; it releases formaldehyde gas.

Function

NAIL CONDITIONINGNAIL SCULPTING

Skin benefits

  • Used in keratin smoothing treatments
  • Effective hair-bond modifier
  • Active at low concentrations

Known concerns

  • IARC Group 1 carcinogen — equilibrium form of formaldehyde
  • Releases formaldehyde gas, irritating eyes/airways
  • EU restricts formaldehyde-releasing substances
  • Sensitization and respiratory hazard

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.