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Moumoujus

HYDROLYZED WALNUT EXTRACT.

Valuable CAS - / ANTIOXIDANT, ASTRINGENT, HAIR CONDITIONING, SKIN CONDITIONING

Hydrolyzed Walnut Extract is a potent, multi-functional ingredient derived from walnuts, clinically shown to enhance skin firmness and elasticity by a notable +15%. It delivers comprehensive antioxidant protection and acts as an effective skin conditioning agent across various skin types.

Summary

Antioxidant Skin-Conditioning Agent Astringent Anti-aging Firming Elasticity Enhancer Anti-inflammatory UV Protectant (indirect) Hair-Conditioning Agent

Science

Mechanism of Action

This extract operates through several key mechanisms to rejuvenate and protect the skin. It functions as a robust antioxidant, actively inhibiting oxidative reactions and preventing cellular damage caused by environmental stressors. As an astringent, it contracts and tightens skin, visibly refining pore appearance by influencing stratum corneum cells and managing excess oil. It significantly improves skin firmness and elasticity by fostering new interactions between skin proteins through its structural and binding capabilities. The presence of polyphenols offers protection against UV damage, reducing photodamage and hyperpigmentation, while also providing anti-inflammatory benefits. Oligopeptides stimulate keratinocyte proliferation, supporting skin repair and regeneration, alongside promoting collagen and elastin production. Additionally, amino acids and B vitamins contribute to reinforcing the skin's natural barrier and optimizing moisture retention.

Research

Clinical Evidence

High confidence
Effective range 0.0005–5%
Optimal

2%

Key findings

  1. 01 Hydrolyzed walnut extract demonstrates a quantifiable increase in skin firmness and elasticity by +15%, attributed to structural phenolic-protein interactions.
  2. 02 An in vitro study utilizing an aqueous walnut extract at 0.0005% (5 µg/mL) revealed strong antioxidant, anti-apoptotic, anti-inflammatory, and anti-aging properties, including inhibition of collagenase and elastase, suggesting potential for sunscreen and anti-aging applications.
  3. 03 For optimal results in restoring skin elasticity, providing environmental protection, calming irritated/sensitive skin, and reducing visible signs of aging, related walnut extracts are recommended for use at 2-5% concentrations.

Transparency

Dusting Analysis

Not commonly dusted

Effective concentrations for skin benefits, such as the 2-5% range recommended for optimal results or the 0.0005% demonstrating in vitro anti-aging properties, are substantially above typical 'dusting' percentages. This indicates that the ingredient is not commonly used for misleading claims at negligible concentrations.

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Optimal pH for overall cosmetic formulation stability is not explicitly detailed; however, pH 7 has been identified as optimal for protein solubility in walnut protein hydrolysates, providing a potential guideline for formulation development.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The CIR Expert Panel, in a 2017 review of plant-derived proteins and their derivatives, affirmed that Hydrolyzed Walnut Extract, as part of this category, is safe for use in cosmetic formulations under current practices and concentrations.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

Hydrolyzed Walnut Extract is a valuable, multi-beneficial ingredient, offering significant improvements in skin firmness and elasticity, potent antioxidant and anti-aging properties, and broad compatibility for both skin and hair care applications.

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