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GLYCINE MAX POLYPEPTIDE.

Valuable / SKIN CONDITIONING

Glycine Max Polypeptide, derived from soybeans, is a multi-functional ingredient that profoundly conditions the skin. It actively contributes to enhanced hydration, improved texture, and amplified elasticity, functioning as a vital component in comprehensive skin health strategies. Its broad spectrum of benefits extends to anti-aging, antioxidant, and anti-inflammatory support.

Summary

Skin conditioning Moisturizing Anti-aging Antioxidant Barrier function support Skin soothing Improves skin elasticity Improves skin texture

Science

Mechanism of Action

This polypeptide operates by signaling the skin's inherent repair mechanisms, thereby stimulating endogenous collagen production to visibly improve elasticity and mitigate the appearance of fine lines and wrinkles. It reinforces the skin's barrier function, significantly reducing transepidermal water loss (TEWL) and optimizing moisture retention. Beyond hydration, it exhibits anti-inflammatory properties that calm sensitive or irritated skin and reduce redness. Specific oligopeptides from Glycine Max are known to inhibit key enzymes like collagenase, elastase, and hyaluronidase, directly contributing to its anti-aging efficacy. Additionally, soy-derived proteins assist in skin smoothing and softening, with some smaller proteins potentially inhibiting pigmentation by disrupting melanosome transfer.

Research

Clinical Evidence

Medium confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 G. max oligopeptide–monosaccharide conjugates (0.5 mg/mL) significantly improved collagenase inhibitory activities by 49.1 ± 1.2% and 45.8 ± 3.3%, respectively, compared to oligopeptide alone (30.5 ± 1.5%). These conjugates also demonstrated an absence of irritation in human skin irritation tests.
  2. 02 A novel antioxidant peptide from black soybean (50 μM) increased HaCaT cell viability by 2.1-fold (p < 0.001) under oxidative stress and reduced reactive oxygen species (ROS) levels by 58 ± 4%. At 100 μM, it exhibited potent radical scavenging activities (DPPH: 82.4 ± 3.1%; ABTS: 88.6 ± 2.7%).

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Glycine Max Polypeptide is water-soluble but can be prone to denaturation from environmental factors, which may diminish its functional effectiveness. Its stability and bioactivity can be significantly improved through conjugation with other molecules. The structural integrity and pH-dependent solubility of soy proteins can also be influenced by changes in ionic strength.

Synergies

  • Conjugation with monosaccharides significantly enhances collagenase inhibitory activity and stability.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed Glycine Max Polypeptide, along with other soy proteins and peptides, safe for use in cosmetics under current practices. While a precise maximum concentration for Glycine Max Polypeptide was not specified, related soy proteins have been safely incorporated into products up to 3.5% in mascara and 0.9% in eye lotion. Furthermore, the FDA recognizes soy-derived peptones as Generally Recognized As Safe (GRAS) for food-grade applications.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Glycine Max Polypeptide is a valuable, multi-functional ingredient that enhances skin hydration, elasticity, and barrier function while providing significant antioxidant and anti-aging benefits.

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