HYDROXYCITRONELLAL — EU Regulated Fragrance Allergen
7-Hydroxy-3,7-dimethyloctanal
HYDROXYCITRONELLAL is one of 26 fragrance substances required to be declared by INCI name on EU cosmetic product labels under Regulation 1223/2009. Declaration is mandatory when concentration exceeds 0.001% in leave-on products or 0.01% in rinse-off products.
Regulatory status
INCI name
HYDROXYCITRONELLAL
CAS number
Synonyms
7-Hydroxy-3,7-dimethyloctanal
Declaration requirement
Must be declared on the cosmetic product label when present above 0.001% in leave-on products or above 0.01% in rinse-off products.
Legal basis
EU Cosmetics Regulation 1223/2009, Annex III
Source and verification note
CosIng Checker is an independent reference website built from publicly available European Commission cosmetic ingredient materials, including Annex II–VI datasets and the ingredient inventory.
Use these pages for research, discovery and comparison, but verify critical regulatory decisions against the official source text and current law.