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Macadamia ternifolia (Macadamia) seed oil
AKA “Macadamia Nut Oil”
Essential Oil
Ingredient Facts
Macadamia ternifolia (Macadamia) seed oil
AKA: Macadamia Nut Oil
Essential Oil · Antioxidant · EWG: 4
Plant-Derived
Antioxidant
Emollient
Skin Conditioner
Essential Oil
Clean
Science: Origin: Botanic/Natural | Process: Cold Pressed / Solvent Extraction ⚠ Allergen Alert (Tree Nut): Derived from a common allergen source. May cause reactions in sensitive individuals.
Family
Proteaceae
Plant Part
Seed
Lifeform
Tree
Climate
Wet tropical
CAS #
128497-20-1 / 129811-19-4
Form
Oil
See origin →
Functions
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Locks In Moisture
Traditional Use
Used by indigenous Australians traditionally for skin and hair conditioning. The oil gained popularity in modern cosmetics in the 1980s for its similarity to skin's natural sebum and its rich content of monounsaturated fatty acids.
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
all-shades-safe
Concentration Guide
Industry Max
Industry typically uses up to 30.0% in leave-on products (21 products reported). Source: CIR Safety Assessment (CIR Seq 577).
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Glyceryl Tripalmate/Palm Kernelate/Olivate/Macadamiate/Rapeseedate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Glycol Dipalmate/Palm Kernelate/Olivate/Macadamiate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Hydrogenated Macadamia Seed Oil
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Jojoba Oil/Macadamia Seed Oil Esters
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Macadamia Integrifolia Seed Oil
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Macadamia Seed Oil Polyglyceryl-6 Esters
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Macadamia Seed Oil Polyglyceryl-6 Esters Behenate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Macadamia Ternifolia (Macadamia) Seed Oil
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Macadamia Ternifolia Seed Oil
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Macadamia Ternifolia Seed Oil PEG-8 Esters
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-16 Macadamia Glycerides
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Phytosteryl Macadamiate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Polyglyceryl-10 Decamacadamiate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Polyglyceryl-2 Tetrabehenate/Macadamiate/Sebacate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Sodium Macadamiaseedate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Hydrogenated Macadamia Seed Oil
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Jojoba Oil/Macadamia Seed Oil Esters
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Macadamia Integrifolia (Macadamia) Nut Oil
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Macadamia Seed Oil Polyglyceryl-6 Esters
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Macadamia Seed Oil Polyglyceryl-6 Esters Behenate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Macadamia Ternifolia Seed Oil
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
PEG-16 Macadamia Glycerides
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Phytosteryl Macadamiate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Clinical Efficacy in Skin Hydration and Reducing Wrinkles of Nanoemulsions Containing Macadamia integrifolia Seed Oil.
Somwongin S, Chaiyana W
Nanomaterials (Basel, Switzerland), 2024
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Clinical Efficacy in Skin Hydration and Reducing Wrinkles of Nanoemulsions Containing Macadamia integrifolia Seed Oil.
Somwongin S, Chaiyana W
Nanomaterials (Basel, Switzerland), 2024
→
Verified Feb 2026
Data: Kew POWO · CosIng · EWG · CIR