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pH Adjuster

SODIUM HYDROXIDE

CAS 1310-73-2
72

Safety score · 0–100

Fine

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

Lye — a strong base used at tiny amounts to balance pH in finished products. Once neutralized in the formula it is harmless; concerns apply only to raw handling.

Function

BUFFERINGDENATURANT

Skin benefits

  • pH adjustment
  • Saponifies oils in soap

Known concerns

  • Corrosive in raw form
  • Skin burn if formulation pH is wrong

References

EU

EU CosIng database

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

PC

PubChem

U.S. NIH compound data, GHS hazard codes and toxicity literature.

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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.