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Moumoujus

LACTOGLOBULIN.

Questionable CAS 9045-23-2 / ANTISTATIC, HAIR CONDITIONING, SKIN CONDITIONING

Lactoglobulin, a key milk protein, offers antioxidant protection and supports cellular regeneration. It is a multi-functional ingredient valued in skincare for its moisturizing, soothing, and anti-aging properties, with potential benefits for acne and sebum control.

Summary

Antioxidant Supports cell proliferation Moisturizing Protective Toning Smoothing Anti-irritation Brightening Soothing Anti-aging Sebum regulation Reduces acne lesions Antistatic Hair conditioning Skin conditioning

Science

Mechanism of Action

Lactoglobulin primarily acts as a ligand transport agent and potent antioxidant, leveraging its inherent disulfide bonds and a free thiol group. It has been shown to stimulate cell proliferation through a receptor-mediated membrane IgM receptor pathway. Broader milk protein contributions include enhancing skin hydration, providing protective effects, refining texture, soothing irritation, promoting even skin tone, and exhibiting anti-aging characteristics. Furthermore, it may contribute to reducing acne lesions and regulating sebum secretion.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 2.5 – 7.5
0 7 14

Stability

Lactoglobulin predominantly exists as a non-covalently linked dimer within a pH range of 5.5 to 7.5 at room temperature. Its solubility is notably diminished at high temperatures, specifically between 100°C and 120°C, leading to significant material loss. The protein is susceptible to denaturation and aggregation with prolonged heating or when pH deviates from its isoelectric point of approximately 5.2, which can result in gel formation.

Conflicts

  • high heat
  • high concentrations of thiocyanate
  • certain polyphenols (e.g., from cocoa and coffee at neutral pH)
  • lactose crystallization (can impair powder solubility)

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk High

The CIR Expert Panel considers bovine milk proteins, including Lactoglobulin, safe for cosmetic use within current industry practices. However, Lactoglobulin is a recognized major milk allergen, carrying a significant potential to induce allergic reactions, including skin reactions, in susceptible individuals. While no specific cosmetic use concentrations were reported in the CIR survey, it holds FDA GRAS status for various food applications at concentrations up to 35%.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Questionable

Despite its potential skin benefits like antioxidant activity and support for cell proliferation, Lactoglobulin's classification as a major milk allergen necessitates cautious formulation and clear communication regarding its use.

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