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pH Adjuster

MALEIC ACID

CAS 110-16-7 Updated
42

Safety score · 0–100

Moderate

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

About

Maleic acid — strong organic acid used as a pH adjuster. GHS labelled as a skin and eye irritant; cosmetic use only safe when fully neutralized in the final pH range.

Function

BUFFERING

Skin benefits

  • pH adjuster
  • Chelating reputation
  • Functional formulation aid

Known concerns

  • GHS skin/eye irritant and harmful if swallowed
  • Strong acid — handle at controlled pH only
  • Use restricted to neutralized form

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.