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GLYCINE SOJA PROTEIN.

Valuable CAS 9010-10-0 / HAIR CONDITIONING, SKIN CONDITIONING, SURFACTANT - EMULSIFYING

Glycine Soja Protein is a plant-derived protein clinically demonstrated to soothe and firm the skin. It acts as a comprehensive defense mechanism, protecting against environmental stressors while enhancing skin's natural hydration and elasticity for a refined complexion.

Antioxidant Skin-conditioning Emollient Anti-aging Soothing Firming Moisturizing Anti-inflammatory Barrier support Cell renewal stimulation

Science

This ingredient functions primarily as an antioxidant and a Matrix Metalloproteinase Inhibitor (MMPI), actively preventing the breakdown of the skin's vital matrix, including collagen and elastin. It supports fibroblast activity, crucial for maintaining skin structure, and mitigates inflammation and irritation often triggered by UV exposure and environmental aggressors. Glycine Soja Protein exhibits high moisturizing capabilities, safeguarding against excessive dryness, and works to re-condition the skin, boosting suppleness. It uniquely normalizes the balance of skin enzymes and their inhibitors, such as human leucocyte elastase and tryptase, thereby minimizing damage from their uncontrolled release. The protein contributes to barrier restoration and stimulates cell renewal, leading to a smoother, more radiant skin surface. Its larger protein components facilitate skin softening, while smaller components like soybean trypsin inhibitor (STI) and Bowman-Birk inhibitor (BBI) are believed to hinder melanosome transfer, potentially reducing pigmentation. The intrinsic isoflavones, genistein and daidzein, further provide potent antioxidant and anti-inflammatory benefits, with genistein specifically shown to alleviate UV-induced redness. Additionally, weak estrogenic effects may help reduce skin thinning and collagen loss, particularly relevant during menopausal stages.


Research

Medium confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Clinically shown to provide a soothing benefit to the skin and improve firmness with regular use, concurrently normalizing the balance of skin enzymes and their inhibitors.

Transparency

Not commonly dusted

Glycine Soja Protein is effectively utilized in cosmetic formulations at concentrations up to 0.9% for its beneficial properties, indicating it is an active ingredient rather than a 'dusted' label claim.


The Formula

Solubility
Water
Optimal pH N/A
0 7 14

Safety

CIR Status
Safe as used
Max tested
0.9%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded Glycine Soja (Soybean) Protein is safe for cosmetic use at current practices and concentrations, up to 0.9% in formulations like eye lotion. Despite soy being a recognized food allergen, dermal exposure is not a significant concern due to the ingredient's water solubility and molecular weight, which prevents substantial skin penetration. Extensive studies have reported no skin irritation or allergic reactions in animal and human subjects from Glycine Soja Protein at concentrations up to 0.4% and related hydrolyzed soy protein up to 25%. A singular case described rosacea aggravation from protein contact dermatitis to soy, but generally, the CIR considers dermal exposure safe.


Your Skin

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

Our Assessment

Valuable

Glycine Soja Protein is a valuable plant-derived ingredient offering multi-faceted benefits, including antioxidant protection, firming, soothing, and advanced moisturization for healthier, more resilient skin.


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