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SODIUM COCOYL TAURATE.

Valuable CAS 86089-05-6 / CLEANSING, SURFACTANT - CLEANSING

Sodium Cocoyl Taurate is a sophisticated amino acid-derived surfactant, celebrated for its gentle yet highly effective cleansing properties. It skillfully reduces surface tension, enabling thorough removal of impurities while helping to maintain skin's natural pH and hydration levels.

Summary

Cleansing Foaming Surfactant Emulsifying Humectant Antioxidant Skin Barrier Support Penetration Enhancement

Science

Mechanism of Action

Functioning primarily as a surfactant, Sodium Cocoyl Taurate significantly lowers the surface tension of liquids, allowing oil and water to mix efficiently for comprehensive cleansing and easy removal of dirt and sebum. It generates a rich, creamy foam and also acts as an emulsifier, stabilizing cosmetic formulations to achieve smooth, uniform textures. Beyond cleansing, it draws moisture to the skin as a humectant, supporting hydration and preventing dryness. This ingredient is known to maintain skin barrier integrity, may offer antioxidant benefits, modulate inflammatory responses, and potentially enhance the penetration of other active compounds.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 In an occlusive patch test (24h, pH 7) on 11 subjects, a 40% concentration led to slight to definite erythema in 2 subjects at 24 hours and 1 subject at 48 hours.
  2. 02 A 20% concentration was predicted to cause severe eye irritation in a Bovine Corneal Opacity and Permeability (BCOP) test.
  3. 03 A Buehler sensitization assay in guinea pigs, using a 100% concentration (challenged at 20%), found the ingredient to be non-sensitizing.
  4. 04 A 28-day oral toxicity study in rats, administered at 1000 mg/kg/d, observed no clinical signs of toxicity.

Transparency

Dusting Analysis

Not commonly dusted
Red flag below
21.5%

Sodium Cocoyl Taurate is a primary functional ingredient with established benefits; therefore, it is unlikely to be 'dusted' or used for superficial claims. However, exceeding the Cosmetic Ingredient Review (CIR) recommended maximum concentrations, specifically 21.5% for rinse-off products and 2% for leave-on applications, presents a significant risk of dermal and ocular irritation. Adherence to these safety limits is critical for responsible formulation.

The Formula

Formulation

Solubility
Water
Optimal pH 5.5 – 8.5
0 7 14

Stability

This ingredient exhibits robust stability to hydrolysis in both acidic and alkaline media, producing stable foam across a wide pH range. For optimal stability and performance in certain formulations, such as shampoos, a narrower pH range of 5.5-6.5 is often recommended. Avoid exposure to temperatures exceeding 80°C to maintain integrity.

Conflicts

  • Heat (above 80C)
  • Strong sunlight
  • General incompatible materials (as per SDS)

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
2%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded Sodium Cocoyl Taurate is safe for cosmetic use under current practices and concentrations, provided it is formulated to be non-irritating. This safety is contingent on adhering to maximum concentrations of 21.5% in rinse-off products and 2% in leave-on products, given observed dermal and ocular irritation at higher levels. While generally considered mild, prolonged or excessive use may lead to irritation or dryness, particularly for individuals with sensitive or allergy-prone skin.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Sodium Cocoyl Taurate is a valuable, multi-functional ingredient offering effective yet gentle cleansing, hydration, and skin barrier support, provided it is meticulously formulated within recommended CIR concentration limits to prevent potential irritation.

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