Ingredient profile
Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde
Raters disagreeperfumingfragranceCAS 31906-04-4CAS 51414-25-6
At least one of our safety lists speaks to this ingredient. Also written as HYDROXYISOHEXYL 3-CYCLOHEXENE CARBOXALDEHYDE, hydroxyisohexyl 3-cyclohexene carboxaldehyde, Hydroxyisohexyl 3-cyclohexene Carboxaldehyde…
Raters don't agree. Here's where each one stands
Safe
—
Caution
Greenlens Precautionary Screen
Independent
EU Harmonised Classification (CLP Annex VI)
Government
Concern
Greenlens Ingredient Scan
Independent
Greenlens Tolerance Screen
Independent
Where each list lands
Funding shown- Concern
Greenlens Ingredient Scan
Independent
Listed in Annex II of the EU Cosmetics Regulation (ref 1380) — prohibited as an ingredient in cosmetic products. (EU Cosmetics Regulation Annex II (prohibited))
- Caution
Greenlens Precautionary Screen
Independent
A fragrance ingredient banned in the EU as a strong, widespread contact allergen. (IFRA restriction / EU Annex III (banned fragrance allergen))
- Concern
Also screened — not on these lists
- Health Canada Ingredient Hotlist
- California Proposition 65
- US NTP Report on Carcinogens
- IARC Monographs
- ANSES Endocrine Disruptors
- EU Microplastics Restriction
Where regulators stand
Shown side by side, never combinedEach jurisdiction is reported on its own terms, from its own official lists. Where they disagree, that disagreement is the finding. Absence from a list is never a safety claim.
European Union
BannedProhibited as a cosmetic ingredient in this jurisdiction.
- European Commission · EU Cosmetics Regulation Annex II (prohibited)Listed in Annex II of the EU Cosmetics Regulation (ref 1380) — prohibited as an ingredient in cosmetic products.
- ECHA (EU CLP Regulation) · EU CLP Regulation Annex VI, Table 3 (harmonised classification, ECHA export): Skin Sens. 1ACarries an EU harmonised classification (Skin Sens. 1A) — a skin sensitiser under CLP Annex VI, index 605-040-00-8. A hazard classification, not proof of harm at the level used.
Canada
No listing foundNot on the lists we hold for this jurisdiction. That is an absence of a listing, not a safety finding.
Checked: Health Canada Cosmetic Ingredient Hotlist.
Notes
- EU-prohibited
- Strong contact sensitizer
- EU harmonised skin sensitizer
