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Solvent

BUTYL HYDROXYBUTYRATE

CAS 53605-94-0 Updated
72

Safety score · 0–100

Fine

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

About

A small butyl ester of hydroxybutyric acid used as a solvent or carrier. PubChem lists no GHS hazards, and it behaves like other simple esters at cosmetic levels.

Function

SOLVENT

Skin benefits

  • Small ester used as solvent or carrier
  • Low molecular weight aids penetration of co-actives
  • Generally non-irritating at cosmetic levels

Known concerns

  • Limited published cosmetic-specific data
  • Possible mild defatting at high percentages
  • No CIR/SCCS review located

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.