Hydroxycitronellal

Hydroxycitronellal 1
molecular structure · PubChem CID 7888
AKA: 107-75-5, 7-Hydroxy-3, 7-dimethyloctanal, 7-Hydroxycitronellal, Citronellal hydrate, 3, 7-Dimethyl-7-hydroxyoctanal, Phixia, Cyclalia, Cyclosia, Laurine
Synthetic
Fragrance
Not Clean
OriginSynthesized from citronellal, a synthetic aldehyde compound derived from petroleum-based or renewable chemical feedstocks. Produced through controlled hydrogenation and oxidation reactions to create the stable fragrance molecule.
Hydroxycitronellal is a synthetic fragrance that is widely used in many cosmetics and hygiene products such as deodorants, soaps, antiseptics, and other household items. It has the smell of lilac, lily, and lily of the valley. Hydroxycitronellal has also been shown to be a dermatologic irritant and allergen, and as a result commercially available products are restricted by the International Fragrance Association (IFRA) to contain only 0.1-3.6%. Sensitivity to hydroxycitronellal may be identified with a clinical patch test.
Solubility slightly
Formula
C10H20O2
Mol. Weight
172.26
CAS #
107-75-5
Form
Liquid
State
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
Allergen Warning
⚠️ EU Fragrance Allergen
Functions
Perfuming
Added for scent. Can be natural or synthetic. Common irritant and allergen — one of the top reasons people react to products.
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
3
CIR
Safe
Pregnancy
Caution
Concentration Guide
0%50%100%
Reg. limit 1%
EU regulatory limit: 1% in products other than oral products. Must be named on the label above 0.001% in leave-on and 0.01% in rinse-off products. Source: EU Cosmetics Regulation (EC) 1223/2009, Annex III (Restricted Substances), Entry 72.
Regulatory Status
USA✔ permitted
EU✔ permitted
JAPAN✔ permitted
CANADA✔ permitted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR