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COCOYL HYDROLYZED SOY PROTEIN.

Valuable / ANTISTATIC, CLEANSING, HAIR CONDITIONING, SKIN CONDITIONING, SURFACTANT - CLEANSING

Cocoyl Hydrolyzed Soy Protein is a plant-derived ingredient recognized for its multifaceted benefits, primarily functioning as a skin and hair conditioning agent. It effectively enhances moisture retention and supports skin barrier integrity, while also offering antioxidant protection.

Summary

Skin conditioning Humectant Surfactant Cleansing Hair conditioning Antioxidant Barrier reinforcement Foam boosting

Science

Mechanism of Action

This ingredient, derived from hydrolyzed soy protein, mimics the skin’s Natural Moisturizing Factors (NMF) to attract and retain water, thereby significantly boosting hydration, plumping the skin, and minimizing the appearance of fine lines. It strengthens the skin matrix and limits transepidermal water loss by interacting with keratin, thus reinforcing the skin barrier. Additionally, it provides antioxidant defense against oxidative stress and may stimulate the synthesis of collagen and elastin to maintain skin elasticity and firmness. It also functions as a gentle surfactant and foam booster in cleansing formulations.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Cocoyl Hydrolyzed Soy Protein generally exhibits stability under standard storage conditions but may be sensitive to extreme pH levels and temperatures. While Hydrolyzed Soy Protein typically performs best within a pH range of 4.0-7.0, specific variants like Sodium Cocoyl Hydrolyzed Soy Protein have demonstrated good stability in high pH formulations.

Conflicts

  • Cationic surfactants (noted for Potassium Cocoyl Hydrolyzed Soy Protein variant)

Safety

Safety Profile

CIR Status
Safe as used
Max tested
0.35%
Sensitization risk Low

The CIR Expert Panel considers soy proteins and peptides, including the base Hydrolyzed Soy Protein, safe for cosmetic use within current practices and concentrations, up to 35%. Despite soy being a known food allergen, its water solubility, low molecular weight, and limited skin penetration suggest a low risk of dermal Type I immediate hypersensitivity reactions. Human studies confirm no dermal irritation at concentrations up to 25%, and non-human studies show no irritation up to 35%. A single case study, however, reported aggravation of rosacea in a patient using soy-containing facial products. The FDA classifies peptones as Generally Recognized As Safe (GRAS) for food use.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Cocoyl Hydrolyzed Soy Protein is a valuable ingredient for its hydrating, barrier-supporting, and antioxidant properties, making it suitable for all skin types with a low risk of irritation or comedogenicity.

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