Skip to content

Pharmaceutical analogue

ISONIACIN

CAS 55-22-1
55

Safety score · 0–100

Moderate

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

Isoniacin (isoniazid) is an antitubercular pharmaceutical compound with very limited evaluation for cosmetic topical use and notable systemic hepatotoxicity concerns at established therapeutic dose levels.

Skin benefits

  • Isomer of niacin (vitamin B3) with potential skin-conditioning relevance
  • Soluble in formulations as an active ingredient
  • Historic pharmaceutical use suggests biological activity at low doses

Known concerns

  • Primarily known as isoniazid pharmaceutical (anti-tuberculosis drug)
  • Hepatotoxicity well documented with systemic exposure
  • Limited evaluation specifically for cosmetic topical use
  • Possible sensitisation and immunological reactions

References

EU

EU CosIng database

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

Check your shelf

Find ISONIACIN in your products.

Scan any cosmetic product with LuxSense to see if it contains ISONIACIN and get a full ingredient breakdown with safety scores.

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.