Eucalyptus oil (radiata)
Under the IFRA Standards a rinse-off soap may hold up to 80 % of this oil, a limit set by its Citral.
IFRA maximum for soap
Restricted constituents, at the typical levels IFRA's annex gives:
- Citral
- 1.5 %
- Geraniol
- 0.16 %
Worked out from typical levels. A supplier's certificate for your lot comes first, and its figure is the one to follow.
Check a blend against its IFRA limits and list its allergens in the fragrance and allergen calculator.
How essential oils behave in soap, and how much to use: Scenting soap.
Identity and labelling
Eucalyptus Radiata Leaf Oil
- Botanical name
- Eucalyptus radiata
The EU does not name this oil itself as an allergen to label, but some of its constituents may be: the fragrance allergen tool works them out for a recipe.
What it is and how it behaves in soap
Eucalyptus radiata oil is steam-distilled from the leaves of the narrow-leaved peppermint, an Australian eucalyptus; South Africa has also grown it for oil, with a better aroma than the Eucalyptus smithii grown there (FAO). It smells of eucalyptus, but softer and sweeter than blue gum oil, with a fresh, faintly fruity edge.
Our books do not tell eucalyptus species apart, so what they say of eucalyptus applies: Faiola lists it among the oils that behave well in cold process, it is a top note that fades over the cure (Cable; Fisher), and Cable's recipes use eucalyptus at 0.9 to 1.6 % of the oils. Radiata is the gentler choice where globulus smells medicinal. The IFRA figure on this page is the ceiling.
The SCCS counts eucalyptus leaf oils among established contact allergens, and the Merck Veterinary Manual lists eucalyptus among oils that can cause seizures in pets, so keep the bottle out of their reach.
Recipes that use it
Sources
- CosIng, the cosmetic ingredient database: EUCALYPTUS RADIATA LEAF OIL, European Commission
- J. J. W. Coppen, Flavours and fragrances of plant origin (Non-Wood Forest Products 1), Food and Agriculture Organization of the United Nations (1995). Eucalyptus radiata oil a minor product of South Africa and Australia, with a better aroma than Eucalyptus smithii oil
- Anne-Marie Faiola, Soap Crafting, Storey Publishing (2013). Eucalyptus among the essential oils that are typically wonderful in cold process soap
- Kelly Cable, The Natural Soap Making Book for Beginners, Althea Press (2017). Eucalyptus as a top note, at 0.9 to 1.6 % of the oils
- David Fisher, The Complete Photo Guide to Soap Making, Creative Publishing International (2018). Eucalyptus among the top notes, intense but fleeting
- Opinion on fragrance allergens in cosmetic products (SCCS/1459/11), Scientific Committee on Consumer Safety, European Commission (2012). Eucalyptus spp. leaf oil among the established contact allergens
- Kia Benson, Toxicoses From Essential Oils in Animals, Merck Veterinary Manual, Merck & Co. (2025). Eucalyptus among the essential oils that can cause seizures in animals