formaldehyde (gas)
Severity 10/10cosmetic ingredient
Is formaldehyde (gas) safe?
formaldehyde (gas) carries significant published concerns (cancer concern, hormone disruption, allergy risk, irritation).
Documented concerns
Each concern below is drawn from official data — see the cited sources ↓
Cancer concern
10/10Classified by IARC Group 1; EU CLP Carc. 1B; California Prop 65 (cancer).
Hormone disruption
10/10Classified by EU CLP Muta. 2.
Allergy risk
10/10Classified by EU CLP Skin Sens. 1A.
Irritation
10/10Classified by EU CLP Skin Corr. 1B.
Official regulatory status
Pulled directly from official regulatory datasets and expert reviews — not our own judgement.
Sources
Each authority below is shown only because our ingested copy of its data lists formaldehyde (gas) — 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.
Related ingredients
Ingredients with a similar role or shared type of concern — useful for comparing what's on your label.
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