Exfoliant
JUGLANS REGIA SEED
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
Walnut seed — a ground tree-nut material historically used as a physical scrub. Effective but can micro-abrade; notable tree-nut allergen.
Juglans regia seed is the kernel of the English walnut, processed into powders or shells for use as a physical exfoliant in scrubs. It is a recognized tree-nut allergen, so formulations should carry appropriate labeling. Ground walnut shell in particular has been criticized for irregular, sharp particles that can micro-abrade facial skin. EU CosIng lists the ingredient without restriction and no GHS pictograms are assigned, though juglone content in bark/hull materials can be irritating. Use finer milled grades on facial skin and prefer rounded, controlled-particle forms.
Skin benefits
- Physical exfoliant when ground
- Nutrient-rich lipid content
- Natural source
Known concerns
- Tree nut allergen
- Sharp edges can micro-abrade skin
- Juglone residues possible
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related exfoliants
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.