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SODIUM TAURINE COCOYL METHYLTAURATE.

Valuable / CLEANSING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

Sodium Taurine Cocoyl Methyltaurate is a gentle, amino acid-based anionic surfactant that effectively cleanses the skin by enabling oil and water to mix, removing impurities. It produces a stable, rich foam while simultaneously acting as an emulsifier and humectant, enhancing formulation stability and skin hydration.

Summary

Cleansing Foaming Surfactant Emulsifying Humectant

Science

Mechanism of Action

This ingredient operates as an anionic surfactant, significantly lowering the surface tension of liquids. This property facilitates the emulsification of oil and water, enabling thorough cleansing and efficient removal of dirt and debris from the skin's surface. Its unique hydrophilic amino acid structure minimizes potential irritation and can mitigate the irritating effects of other surfactants in a formulation. Additionally, it functions as an emulsifier to stabilize diverse ingredient types and as a humectant, drawing moisture into the skin to support hydration.

Research

Clinical Evidence

High confidence
Effective range 1–10%
Optimal

1%

Key findings

  1. 01 Typically used in skin care products and deemed safe for use in cosmetics when formulated to be non-irritating.
  2. 02 Deemed safe for use in cosmetics.
  3. 03 An occlusive patch test in distilled water (pH 7) showed slight to definite erythema in 2 out of 11 subjects at 24 hours and 1 subject at 48 hours.
  4. 04 Demonstrated significantly less ocular irritation to rabbits compared to a 100% concentration.

Transparency

Dusting Analysis

Commonly dusted
Min. effective
10%
Red flag below
40%

While generally well-tolerated and deemed safe for cosmetic use up to 10%, concentrations significantly above this threshold, such as 40%, have been shown to induce skin irritation (erythema) in patch tests. This suggests that while it is a mild ingredient, its gentle properties are dependent on appropriate formulation within established safety limits, and excessively high concentrations should be avoided.

The Formula

Formulation

Solubility
Water
Optimal pH 6 – 8
0 7 14

Stability

This ingredient generates a rich, fine, and stable foam across a broad pH spectrum. It maintains general stability in water but is susceptible to hydrolysis under strongly acidic or alkaline conditions, which can compromise its integrity and performance.

Conflicts

  • Strong acidic conditions (prone to hydrolysis)
  • Strong alkaline conditions (prone to hydrolysis)

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
10%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Sodium Taurine Cocoyl Methyltaurate is safe for use in cosmetics when formulated to be non-irritating, specifically up to concentrations of 10%. It is widely recognized as safe for sensitive skin types and exhibits a low likelihood of inducing allergic reactions. The Environmental Working Group (EWG) assigns it a 'low' hazard score of 1, indicating minimal concerns across categories such as cancer, allergies, and developmental toxicity.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A highly valuable, gentle amino acid-based surfactant, Sodium Taurine Cocoyl Methyltaurate is ideal for precision skincare formulations requiring effective cleansing, stable foam, and hydration benefits across all skin types, with a low risk of irritation.

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