murphyBertholletia Excelsa Seed Oil PEG-8 Esters
AKA: Brazil Nut Oil PEG-8 Esters
Plant-Derived
Skin Conditioner
Hair Care
Not Clean
OriginBertholletia excelsa is a tree native to South America, primarily Brazil, belonging to the Lecythidaceae family. Cold-pressed from the seeds. The oil is then transesterified with PEG-8 to enhance water solubility and skincare performance.
Bertholletia Excelsa Seed Oil PEG-8 Esters is a complex mixture of esters formed from the transesterificaton of Bertholletia Excelsa Seed Oil and PEG-8
Family
Lecythidaceae (Brazil nut family)
Plant Part
Seed
CAS #
160965-04-8
Form
Oil
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Allergen Warning
⚠️ Tree Nut (Brazil Nut)
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
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2014
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR