isonicotinic acid hydrazide (isoniazid)
No flagscosmetic ingredient
Is isonicotinic acid hydrazide (isoniazid) safe?
isonicotinic acid hydrazide (isoniazid) is prohibited in cosmetic products in Canada (Health Canada Cosmetic Ingredient Hotlist).
Official regulatory status
Pulled directly from official regulatory datasets and expert reviews — not our own judgement.
Health Canada: Prohibited
Sources
Each authority below is shown only because our ingested copy of its data lists isonicotinic acid hydrazide (isoniazid) — not because we asserted it. Follow a link to verify the classification or regulation directly.
See our methodology for how these map to concern levels. Informational only — not medical advice.
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