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TEA-COCOYL HYDROLYZED SOY PROTEIN.

Valuable / ANTISTATIC, HAIR CONDITIONING, SKIN CONDITIONING

This versatile ingredient, derived from soy protein and coconut oil, functions as a mild, vegetable-based surfactant while delivering significant skin conditioning benefits. It enhances hydration, supports barrier function, and offers antioxidant protection, making it suitable for a broad range of skincare applications.

Summary

Humectant Skin Conditioning Surfactant Cleansing Agent Foam Booster Emulsifying Antioxidant Barrier Support Collagen Stimulant

Science

Mechanism of Action

TEA-Cocoyl Hydrolyzed Soy Protein operates as a gentle surfactant, providing mild cleansing for both skin and hair. Its primary skin benefits arise from its hydrolyzed soy protein component, which, when broken into smaller peptides and amino acids, acts as a potent humectant. It effectively attracts and retains water in the skin's outermost layers, thereby enhancing moisture content and promoting a softer, smoother complexion. This action also reinforces the stratum corneum, limiting transepidermal water loss (TEWL) and improving overall barrier function. The soy peptides and isoflavones present within the hydrolyzed protein offer antioxidant activity, scavenging free radicals and safeguarding against oxidative stress from environmental factors like UV radiation and pollution. Furthermore, it stimulates the production of hyaluronic acid and collagen, contributing to improved skin elasticity and firmness, and a visible reduction in fine lines and wrinkles. As a surfactant, it also aids in cleansing, foam generation, and emulsification.

Research

Clinical Evidence

Medium confidence
Effective range 1–10%
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 4 – 9
0 7 14

Stability

The hydrolyzed soy protein component is generally stable but shows sensitivity to extreme pH values and temperatures exceeding 40°C. However, derivatives like Sodium Cocoyl Hydrolyzed Soy Protein exhibit good stability in high pH formulations.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
3.5%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that soy proteins and peptides, encompassing hydrolyzed soy protein, are safe in cosmetic applications at current use concentrations. Hydrolyzed soy protein demonstrated no dermal irritation or sensitization in rabbit or human studies when tested at concentrations up to 25%. In vitro ocular assays predicted it to be non-irritating to only slightly irritating at concentrations up to 35%. While soy proteins are recognized food allergens, the CIR Panel dismissed concerns regarding dermal exposure, attributing this to their water solubility, lack of skin penetration, and molecular weights too low to induce IgE-cross-linking. Although a related ingredient, TEA-Cocoyl Hydrolyzed Collagen, was reported as severely irritating in one study, TEA-Cocoyl Hydrolyzed Soy Protein is generally considered a mild surfactant.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

TEA-COCOYL HYDROLYZED SOY PROTEIN is a valuable ingredient, offering gentle cleansing alongside significant skin benefits including hydration, barrier reinforcement, antioxidant protection, and anti-aging properties, with a favorable safety profile across all skin types.

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