Hydrogenated Macadamia Seed Oil
AKA “Hardened macadamia nut oil, Hydrogenated macadamia oil”
Essential Oil
Ingredient Facts
Hydrogenated macadamia seed oil
AKA: Hardened macadamia nut oil, Hydrogenated macadamia oil
Essential Oil · Hair Conditioning · EWG: 4
Plant-Derived Synthetic
Skin Conditioner
Hair Care
Essential Oil
Clean
Macadamia seed oil from Australia that deeply conditions and softens both hair and skin, leaving them smooth and nourished.
Effective at 30.0%
CAS #
129811-19-4
Form
Oil
See origin →
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.
Skin Types
●all-skin-types
Best For
Dryness
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Allergen Warning
⚠️ Tree Nut (Macadamia)
EWG
4
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.0005%
60.0%
0%84%
Effective Range
CIR reported use: 0.3-4 | 0.001-3 | 0.01-15 | 0.0005-60 | 0.06-3
Regulatory Agencies
Verified Feb 2026
Data: CosIng · EWG · CIR