Hydrogenated Macadamia Seed Oil
molecular structure · PubChem
AKA: Hardened macadamia nut oil, Hydrogenated macadamia oil
Allergen Warning
⚠️ Tree Nut (Macadamia)
Plant-Derived
Skin Conditioner
Hair Care
Clean
Hydrogenated Macadamia Seed Oil is the end-product of the controlled hydrogenation of the oil expressed from the seeds of Macadamia integrifolia, Proteaceae
Effective at 30.0%
Family
Proteaceae (Protea family)
Plant Part
Seed
CAS #
129811-19-4
Form
Oil
Functions
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Locks in moisture
Traditional Use
Macadamia nut oil was traditionally used by indigenous Australians for skin and hair care. Hydrogenation of macadamia seed oil was developed in the 20th century to create a more stable oil suitable for cosmetic formulations while maintaining its emollient and nourishing properties.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.0005%
60.0%
0%84%
Reported use
CIR reported use: 0.3-4 | 0.001-3 | 0.01-15 | 0.0005-60 | 0.06-3
Regulatory Agencies
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR