Oakmoss Absolute Oil is a thick, dark-brown aromatic extract from the lichen Evernia prunastri, prized in perfumery as a base note that gives blends a deep, earthy, woody and slightly leathery character. In simple terms: you add a small amount to a fragrance to make it richer, warmer and longer-lasting. It is a cosmetic-grade material for scenting, not something you eat or apply neat to skin.
What Oakmoss Absolute Oil is
This absolute is produced by solvent extraction from oakmoss lichen, which grows on oak and other trees. The result is a concentrated, thin-to-viscous liquid with a scent often described as forest floor after rain \u2014 mossy, dry, a little smoky. In classic perfumery it is one of the defining ingredients of the "chypre" and "foug\u00e8re" families, sitting quietly at the base while brighter top notes fade away.
Key facts for makers: botanical name Evernia prunastri, CAS 68917-10-2, FEMA 2334, dark brown liquid, soluble in alcohol and fixed (carrier) oils, and a shelf life of about two years when stored properly.
Common uses
- Fine and natural perfumery \u2014 as a fixative and base note that anchors a blend and slows evaporation of lighter notes.
- Soap making \u2014 to add earthy depth to cold-process and melt-and-pour bars.
- Candles \u2014 blended into wax for a grounded, woody throw.
- Personal care and skincare formulations \u2014 used sparingly as a fragrance component in creams, balms and beard oils.
- Room and linen sprays \u2014 diluted in a suitable alcohol base.
How to use it in a blend
Oakmoss is potent, so a little goes a long way. Because it is a base note, you use it as a foundation and build lighter notes on top.
- Dilute first. Make a 10% solution in perfumer's alcohol or a fixed oil so you can dose it accurately, since the raw absolute is thick and dark.
- Start low. Aim for roughly 1\u20135% of your total fragrance blend and adjust from there.
- Blend thoughtfully. Oakmoss pairs beautifully with bergamot, ginger, palmarosa, tea tree and vetiver. Citrus tops with an oakmoss base is the classic chypre skeleton.
- Let it rest. Give the finished blend a few days to a couple of weeks to mature; the notes marry and the scent settles.
Do a small test batch before scaling up. The dark colour can tint soap and lotion, so use minimal amounts in pale products.
Safety notes
Treat this as a concentrated fragrance material, not a therapeutic oil.
- Always dilute before skin contact and do a patch test on the inner arm; oakmoss is a known potential sensitiser for some people.
- Do not ingest. The FEMA number refers to regulated flavour use at trace levels in industry, not home consumption.
- Keep well away from children and pets, and store away from open flame \u2014 the flash point is around 100\u00b0C.
- Use in a well-ventilated space and avoid contact with eyes.
- If you sell finished cosmetics, follow current IFRA guidance on oakmoss usage limits for the product type.
Buying and storage tips
Azlok offers Oakmoss Absolute Oil in sizes from a 10 ml sample right up to bulk 5 KG and 10 KG packs, so hobbyists and small businesses can both find a suitable quantity. The sample size is the sensible way to test the aroma and how it behaves in your recipe before committing to more.
- Store in a tightly closed, amber glass bottle away from heat and direct sunlight.
- Keep the cap sealed to limit oxidation and preserve the two-year shelf life.
- Because it is thick and sticky, keeping a pre-made dilution on hand saves mess and improves dosing accuracy.
- Ask for the COA and MSDS if you need documentation for formulation or resale.
FAQ
What does oakmoss absolute smell like?
Deep, earthy and woody with a slightly leathery, mossy quality \u2014 think damp forest floor. It is a rounded base note rather than a bright, fresh one.
Can I apply oakmoss absolute directly to my skin?
No. It is highly concentrated and can irritate or sensitise skin if used neat. Always dilute it in a carrier oil or alcohol and patch-test first.
What blends well with oakmoss oil?
Bergamot, ginger, palmarosa, tea tree and vetiver are classic partners. Citrus top notes over an oakmoss base create the traditional chypre style.
How much oakmoss should I use in a perfume?
Start small \u2014 around 1 to 5 percent of the total blend \u2014 and adjust to taste. Working from a 10% dilution makes accurate dosing much easier.
How long does it last and how should I store it?
Roughly two years when kept in a sealed amber bottle away from light and heat. Minimising air exposure helps preserve the aroma.