Common Name(s): Walnut seed butter,juglans regia butter,walnut butter
DESCRIPTION
What It Does: Nourishes skin deeply with the omega-3 and antioxidant-rich butter from walnut seeds.
Why It's Used: Walnut seed butter concentrates the solid fraction of walnut oil (linoleic ~58%, ala ~14%) alongside juglone (a unique naphthalene antioxidant specific to juglans species); provides rich efa emolliency.
How It Works: Linoleic acid (c18:2, ~58%) provides barrier lipid replenishment; ala (c18:3 omega-3, ~14%) provides anti-inflammatory potential; juglone (5-hydroxy-1,4-naphthoquinone) provides potent antioxidant and antimicrobial activity.
Typically Found In: Premium walnut skin care,omega-rich formulas,anti-inflammatory products
TECHNICAL DETAILS
Primary Category: Functional ingredient – emollient
Secondary Functions: Skin conditioning,antioxidant,efa supply
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.5%–10%
SOURCING & ETHICS
Vegan Status: Conditional - supplier confirmation required
Halal Status: Unverified - supplier confirmation required
Source Notes: From juglans regia (walnut) seeds; tree nut origin; natural plant. [audit 2026-07-29 rev2: the record's own source_notes does not assert a non-animal origin, or instructs the reader to verify with the supplier; "yes" asserts knowledge the record does not hold. determination requires shariah-panel sign-off.]
SKIN COMPATIBILITY
Irritancy Rating: 1/5 – very low
Comedogenicity Rating: 1/5 – low
Sensitivity Concerns: Generally well tolerated; rare walnut/tree nut allergy.
Safe for Sensitive Skin: Conditional – nut allergy
SAFETY & COMPATIBILITY
Safety Profile: Good safety profile. note potential nut allergy cross-reactivity. ewg score: 1.
Works Well With: Rosehip seed oil,other omega-rich butters,vitamin e
Avoid Combining With: No significant incompatibilities; high pufa content — use antioxidants
SCIENTIFIC NOTE
Juglone (found in walnut hulls, leaves, and wood) is a potent allelopathic compound and antioxidant; walnut seed butter contains trace juglone alongside its efa-rich fatty acid profile; high pufa content requires antioxidant protection to prevent rancidity.
Last Verified: 2026-03-28
Primary Sources: Cosing database,inci dictionary