Macadamia integrifolia seed oil
AKA “Macadamia Oil, Macadamia Nut Oil”
Oil
Ingredient Facts
Macadamia integrifolia seed oil
AKA: Macadamia Oil, Macadamia Nut Oil
Oil · Skin Conditioning · EWG: 4
Plant-Derived
Skin Conditioner
Not Clean
Macadamia Integrifolia Seed Oil is the fixed oil obtained from the nuts of the Macadamia integrifolia, Proteaceae
Effective at 15.0%
Family
Proteaceae (Protea family)
Plant Part
Seed
Lifeform
Tree
Climate
Wet tropical
CAS #
438545-25-6, 159518-86-2
Form
Oil
See origin →
Functions
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 nuts are native to Australia and have been used by indigenous peoples for food and medicine for thousands of years. The oil was commercialized in the 20th century for cosmetic use, valued for its similarity to human skin sebum.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Allergen Warning
⚠️ Tree Nut (Macadamia)
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
6e-05%
30.0%
0%100%
Effective Range
CIR reported use: 0.00006-5 | 0.0003-30
Regulatory Agencies
Macadamia Integrifolia Seed Oil
European Commission
EU Cosmetic Ingredient Database (CosIng)
Clinical Efficacy in Skin Hydration and Reducing Wrinkles of Nanoemulsions Containing Macadamia integrifolia Seed Oil.
Somwongin S, Chaiyana W
Nanomaterials (Basel, Switzerland), 2024
Clinical Efficacy in Skin Hydration and Reducing Wrinkles of Nanoemulsions Containing Macadamia integrifolia Seed Oil.
Somwongin S, Chaiyana W
Nanomaterials (Basel, Switzerland), 2024
Verified Jun 2026
Data: Kew POWO · CosIng · EWG · CIR