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Moumoujus

EGG YOLK EXTRACT.

Valuable CAS 91080-17-0 / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

Egg Yolk Extract is a nutrient-rich ingredient derived from egg yolks, packed with lipids, proteins, and a spectrum of essential vitamins and minerals. It primarily functions as an effective emulsifier while offering extensive skin conditioning, moisturizing, and restorative benefits.

Summary

emulsifying surfactant skin firming sebum control anti-aging anti-wrinkle antioxidant wound healing anti-inflammatory emollient moisturizer skin conditioner penetration enhancer repairing rejuvenating brightening

Science

Mechanism of Action

This extract operates on multiple dermal levels, primarily due to its high lecithin content, which serves as an emulsifier to facilitate active ingredient delivery and maintain skin hydration for improved suppleness. Its rich composition of lipids, proteins, and vitamins (A, D, E, K, B-complex), alongside minerals like calcium and iron, supports overall skin health. Key components such as carotenoids (lutein, zeaxanthin) and cholesterol contribute to its antioxidant, anti-inflammatory, and reparative actions. It is noted to enhance skin firmness, regulate sebum, reduce signs of aging and wrinkles, and act as a penetration enhancer. Furthermore, it has demonstrated potential in models to alleviate atopic dermatitis symptoms by modulating immune responses and bolstering skin barrier function, with its Vitamin A content also contributing to reduced hyperpigmentation and brighter skin tone.

Research

Clinical Evidence

Medium confidence
Effective range 0.3–0.5%
Optimal

0.5%

Key findings

  1. 01 Significantly enhanced the metabolic activity of skin cells, as evaluated by Chengdu University of Traditional Chinese Medicine.
  2. 02 Demonstrated efficacy as an emollient in cosmetic formulations, including hand, body, and massage creams, as reported in the Research Journal of Pharmacy and Technology.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH 4 – 9
0 7 14

Stability

The ingredient's protein components are susceptible to denaturation from heat and shear forces. Advanced extraction methods, such as supercritical CO2, are critical for preserving thermosensitive compounds and eliminating potential allergenic protein residues, ensuring ingredient integrity and performance. Optimal pH for emulsion stability when egg yolk is used as a stabilizer has been observed at pH 9.0, while egg yolk granules showed good emulsification at pH 4.0. Stability for HDL hydrolysates was better at pH 5 and optimal for high internal phase emulsions at pH 7.0.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Unknown

While not explicitly reviewed by the Cosmetic Ingredient Review (CIR) or listed as restricted by the FDA for U.S. cosmetic use, compliance with European regulations is paramount. The European Commission's CosIng database mandates the exclusion of Category 1 and 2 animal by-products in cosmetics, emphasizing the need for meticulous sourcing and processing to meet regulatory standards.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Egg Yolk Extract offers a multifaceted approach to skin health, delivering significant conditioning, reparative, and anti-aging benefits across various skin types, though its formal safety assessments remain pending.

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