Linum usitatissimum (Linseed) seed oil

Linum usitatissimum (Linseed) seed oil 1
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Linum usitatissimum (Linseed) seed oil 2
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Linum usitatissimum (Linseed) seed oil 3
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Linum usitatissimum (Linseed) seed oil 4
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AKA: Common flax, Linseed Seed Oil
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Plant-Derived
Fragrance
Skin Conditioner
Clean
OriginNative to Middle East, Europe. Derived from seeds of Linum usitatissimum (flax), a plant in the Linaceae family cultivated in Europe and the Middle East. Cold-pressed or solvent-extracted from the seeds to obtain the oil.
Linum Usitatissimum (Linseed) Seed Oil is a cosmetic ingredient used as perfuming, skin conditioning. Rated low hazard by EWG. Assessed as safe by the CIR.
Family
Linaceae (Flax family)
Plant Part
Seed
Climate
Temperate
CAS #
8001-26-1
Form
Oil
Skin Types
●all-skin-types, gentle
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Functions
Perfuming
Added for scent. Can be natural or synthetic. Common irritant and allergen — one of the top reasons people react to products.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Adds Fragrance
Conditions Skin
Antioxidant Protection
Locks In Moisture
Wound Healing
Adds pleasant scent
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Skin Irritant
1 study / 1 not irritating (CIR 577)
Not a Sensitizer
1 study / 1 not sensitizing (CIR 577)
Mixed Eye Irritation Results
2 studies / 1 irritating / 1 not irritating / reactions moderate (CIR 577)
Concentration Guide
Leave-on0.002–10%
Rinse-off0.001–0.4%
0%50%100%
CIR reported use · report published 2017
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: Kew POWO · CosIng · EWG · CIR