Juglans Regia Seed
INCI: JUGLANS REGIA SEED
Reviewed by Rosie · Last updated 14 Aug 2026
Also known as: Juglans Regia Seed
A finely textured physical exfoliant derived from walnut seed
Best For Skin Types
All
Addresses
Usage Frequency
1-2 times per week
What Is Juglans Regia Seed?
Juglans regia seed (walnut seed) is a plant-derived exfoliating agent commonly used in skincare as a physical abrasive. The seed particles are ground to create a gritty texture that helps remove dead skin cells and surface debris when applied to the skin.
Walnut seeds contain natural compounds including fatty acids and phenolic substances. When processed for cosmetic use, the particles work mechanically rather than chemically, making this an example of a physical exfoliation method.
Benefits for Your Skin
How It Works
Juglans regia seed particles work as a physical exfoliant. When massaged onto damp skin, the irregular texture of the ground seed gently abrades the outermost layer of dead skin cells, helping to slough them away. This mechanical action differs from chemical exfoliants, which dissolve dead skin using acids or enzymes.
The process helps to decongest pores and can promote a smoother skin surface, though the degree of exfoliation depends on particle size and how the product is formulated and used.
Clinical Evidence & References
Research on walnut seed itself has primarily focused on its nutritional and antioxidant properties when consumed orally, rather than its use as a topical skincare ingredient. Limited published data directly addresses the efficacy of Juglans regia seed as a cosmetic exfoliant.
Physical exfoliation as a category is well-established, though dermatological consensus emphasises the importance of gentle technique and appropriate frequency to avoid irritation or damage to the skin barrier. Individual tolerance to walnut seed particles may vary.
Published Research
How to Use
Use in a gentle circular motion on damp skin, focusing on areas with buildup or congestion. Avoid the delicate eye area. Start with once or twice weekly use and adjust frequency based on your skin's response. Always follow product instructions and rinse thoroughly with lukewarm water. Follow with a moisturiser to support skin hydration post-exfoliation.
Safety & Precautions
Frequently Asked Questions
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Juglans Regia Seed is a variant of Juglans Regia Seed Extract, the form you will most often see on an ingredients list.
A walnut-derived extract with antioxidant properties for skin conditioning
Related Ingredients
Juglans Regia Seed Extract
A walnut-derived extract with antioxidant properties for skin conditioning
Juglans Regia (Walnut) Seed Extract
Extract that can have antioxidant properties for skin
Juglans Regia Shell Powder
A natural exfoliating powder derived from walnut shell fragments
Juglans Regia Seedcoat Extract
A plant-derived antioxidant from walnut seedcoat to help protect skin from oxidative stress
Isoparaffin
Saturated white wax derived from petroleum | Highly purified for use in cosmetics
Isostearyl Alcohol
Emollient— provides long-lasting moisture and softens skin | Viscosity control—helps improve product texture and flow
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