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Moumoujus

SODIUM COCO/BABASSU SULFATE.

Valuable / CLEANSING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

Sodium Coco/Babassu Sulfate is an anionic surfactant derived from coconut and babassu oils, primarily recognized for its robust cleansing and foaming properties in skincare and haircare formulations. It effectively lifts and emulsifies oil-based impurities from the skin and hair, facilitating their rinse-off.

Summary

Cleansing Emulsifying Surfactant

Science

Mechanism of Action

As an anionic surfactant, Sodium Coco/Babassu Sulfate functions by significantly lowering the surface tension of water. Its unique molecular structure, possessing both hydrophobic (oil-soluble) and hydrophilic (water-soluble) components, enables it to efficiently interact with and entrap oil-based dirt, sebum, and product residues. This action generates a rich, stable foam that encapsulates impurities, allowing them to be thoroughly rinsed away from the skin and hair surface.

Research

Clinical Evidence

Medium confidence
Effective range 0.3–80%
Optimal

N/A

Key findings

  1. 01 Research, primarily on the closely related Sodium Coco-Sulfate, indicates its effectiveness across a broad concentration range (0.3% to over 80%) in developing gentle foams for efficient skin and hair cleansing, dissolving grease and dirt.
  2. 02 For liquid cleansers, concentrations between 1% and 15% are generally suitable as an effective cleanser.
  3. 03 In solid cleansing formats like shampoo bars, it can constitute a significant portion, upwards of 80%, forming a major part of their solid structure.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 5 – 8.5
0 7 14

Stability

This ingredient is water-soluble, optimally dispersing at temperatures of at least 40°C, often requiring heat for even incorporation. While its inherent pH is alkaline (9.0-11.0), final product formulations should be adjusted to an optimal pH range of 5.0–8.5 for stability and performance. As an alkyl sulfate, it belongs to a class of compounds that may exhibit instability under high-temperature conditions.

Conflicts

  • Can potentially interact with epidermal lipids and compromise the skin barrier when present in high concentrations.
  • The risk of irritation may be elevated when co-formulated with other potentially problematic ingredients.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed alkyl sulfates, including the closely related Sodium Coco-Sulfate, safe for use in cosmetics without a specified maximum concentration, allowing formulation performance to dictate levels. European Union regulations do not impose concentration limits. The Environmental Working Group (EWG) categorizes Sodium Coco-Sulfate with low concerns for carcinogenic, allergenic, or immunotoxic effects, but notes moderate concern for skin, eye, or lung irritation. It is restricted in EWG VERIFIED products without adequate safety substantiation.

Your Skin

Skin Compatibility

Yes Normal
No Dry
Yes Oily
No Sensitive
Irritancy Medium
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

A valuable anionic surfactant for effective cleansing across various formulations, particularly beneficial for normal to oily skin types, though careful formulation is essential to mitigate its moderate irritation potential.

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