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amino_acid_ester

ETHYL ASPARTATE

CAS 4070-43-3
70

Safety score · 0–100

Fine

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

Ethyl aspartate is the ethyl ester of L-aspartic acid, used as a skin-conditioning amino acid derivative with limited independent cosmetic safety literature.

Skin benefits

  • amino acid ester skin conditioner
  • may support hydration
  • low molecular weight, easily formulated

Known concerns

  • scarce standalone safety data
  • hydrolysis behaviour on skin not well characterised
  • fragrance and stability variability

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