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Humectant

METHYLPROPANEDIOL

CAS 2163-42-0
85

Safety score · 0–100

Good

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

A lightweight humectant and solvent — pulls in moisture and helps active ingredients absorb more effectively. Well-tolerated, increasingly common, and often plant-derived.

Skin benefits

  • Lightweight humectant and solvent
  • Penetration enhancer for actives
  • Improves product feel
  • Plant-derived option available

Known concerns

  • Rare contact sensitisation
  • Penetration enhancer — increases delivery of other ingredients

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.