Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde
4-(4-hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde; HICC; Lyral
BANNED in EU cosmetics since August 23, 2019 (placed on market) and August 23, 2021 (sale deadline) under Commission Regulation (EU) 2017/1410 placing it in Annex II; one of the most potent contact allergens ever used in cosmetics - sensitization rates as high as 2-3% of patch-tested population; IFRA also banned; India has no explicit ban but SCCS/IFRA guidance applies; TCS highest concern - must be flagged in any product
Function & Common Use
Fragrance / Perfuming / Aroma Chemical
Fragrance Materials
Formerly used in lily-of-the-valley, muguet, floral, and fresh perfumes; now globally phased out by responsible manufacturers
Synthetic
Concentration Limits
No specific ban; follow IFRA guidance; use with caution
BANNED - 0% permitted in all cosmetic products in EU since August 23, 2021 (enforcement date)
No federal ban; IFRA-based voluntary restrictions
Restricted; declaration required
Format restriction: EU: completely banned in all cosmetic products (Annex II) since Commission Regulation (EU) 2017/1410; IFRA: banned under IFRA standards
Baby restriction: Yes
Pregnancy: No
IFRA: Banned by IFRA - prohibited in all product categories
Frequently Asked Questions
Is Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde safe to use in skincare?
Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde has a High concern rating. BANNED in EU cosmetics since August 23, 2019 (placed on market) and August 23, 2021 (sale deadline) under Commission Regulation (EU) 2017/1410 placing it in Annex II; one of the most potent contact allergens ever used in cosmetics - sensitization rates as high as 2-3% of patch-tested population; IFRA also banned; India has no explicit ban but SCCS/IFRA guidance applies; TCS highest concern - must be flagged in any product
Is Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde allowed in India?
Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde is currently classified as "Restricted" under Indian cosmetics regulations. The maximum permitted concentration is No specific ban; follow IFRA guidance; use with caution.
What is Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde used for in cosmetics?
Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde functions as: Fragrance / Perfuming / Aroma Chemical. It is commonly found in: Formerly used in lily-of-the-valley, muguet, floral, and fresh perfumes; now globally phased out by responsible manufacturers.
Can Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde cause an allergic reaction?
Yes. Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde has an allergen flag (Yes - EU Annex III fragrance allergen (formerly; now moved to Annex II - banned)). If you have sensitive skin or known fragrance/contact allergies, patch-test products containing this ingredient before full use.
Is Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde safe for babies?
Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde has baby/child restrictions: Yes. Avoid using products containing this ingredient on infants unless specifically formulated and labelled for baby use.
Regulatory Status
EU Annex: Annex II (banned substance - prohibited in cosmetic products)
Identifiers
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