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Propellant

ISOBUTANE

CAS 75-28-5 Updated
70

Safety score · 0–100

Fine

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

About

An aerosol propellant — flashes off in seconds so it barely touches your skin. Safe in cosmetic use when properly purified to remove butadiene impurity; flammability is its main hazard.

Skin benefits

  • Propels product out of aerosol cans
  • Evaporates rapidly — no skin residue
  • Replaces ozone-depleting CFCs

Known concerns

  • Highly flammable
  • Health concern only if contaminated with butadiene (Group 1 carcinogen)
  • Inhalation hazard in unventilated areas
  • Cosmetic-grade purification is critical

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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Check your shelf

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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.