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Used with care


Hydroxycitronellal is an aromatic chemical usually appearing as a pale yellow liquid with a sweet floral scent. It is synthesized by adding water to citronellal, one of the main components of citronella (Cymbopogon) oil. Hydroxycitronellal is frequently used for its sweet lily-citrus notes in the composition of fragrances for perfumery, personal care products and soaps.

Hydroxycitronellal is recognised by the International Fragrance Association (IFRA) as a potential irritant and allergen, meaning some people may be sensitive to this ingredient. It is only considered a low hazard when used at low concentrations (<3.6%). This ingredient appears in some of our products as a component of our essential oil fragrances, always at concentrations well below 1% of the final formulation. We use this ingredient with care, and consider this an area for safer chemistry innovation.

Other names: C10H20O2, 7-Hydroxy-3,7-Dimethyloctanol, Octanol, 7-Hydroxy-3,7-Dimethyl-

INCI Name:
Ingredient origins:
Synthetic, Lemongrass
Common name:
EWG score: The EWG score is a hazard score ranging from 1-2 (low hazard), 3-6 (moderate hazard) and 7-10 (high hazard) published by the Environmental Working Group. Their data is sourced from the Skin Deep® database and studies published in open scientific literature.
3 - 6 (depends on usage)