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MAGNESIUM LAURETH SULFATE.

Valuable CAS 62755-21-9 / CLEANSING, SURFACTANT - CLEANSING

Magnesium Laureth Sulfate is a mild anionic surfactant distinguished by its effective cleansing capabilities, facilitating the removal of dirt and oils while generating stable lather. Its gentle profile makes it a versatile ingredient suitable for a range of skin types, including sensitive, when properly formulated.

Summary

cleansing surfactant

Science

Mechanism of Action

As a surfactant, Magnesium Laureth Sulfate features a unique molecular structure with both hydrophilic (water-loving) and lipophilic (oil-loving) components. This duality enables its lipophilic portion to bind with fatty secretions and impurities on the skin, while its hydrophilic segment ensures these substances are effectively dispersed and rinsed away by water, delivering comprehensive cleansing. Additionally, it efficiently reduces the surface tension of water, which is crucial for creating robust lather and foam, and acts as an emulsifier to stabilize oil and water phases within 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 3.5 – 7.5
0 7 14

Stability

Magnesium Laureth Sulfate exhibits stable foaming characteristics across a broad pH range of 3.5 to 7.5. Optimal foaming stability has been observed in slightly acidic conditions (pH 3.5-4.0) and neutral conditions (pH 5.5-6.0). Due to the potential for irritation at high concentrations typical of sulfates, formulations must be carefully designed to ensure overall non-irritating properties.

Synergies

  • Anionic surfactants
  • Amphoteric surfactants
  • Nonionic surfactants

Safety

Safety Profile

CIR Status
Safe with restrictions
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed Magnesium Laureth Sulfate and related sulfated ethoxylated alcohols as safe for cosmetic use, provided final product formulations are non-irritating. While a specific maximum concentration for Magnesium Laureth Sulfate was not provided by CIR, the FDA recommends that products containing Sodium Lauryl Sulfate (a related surfactant) that remain on the skin for extended periods should not exceed 1% concentration. Concerns regarding potential contamination by Ethylene Oxide and 1,4-Dioxane have been noted by EWG, though these risks are considered low and manageable through proper manufacturing processes.

Your Skin

Skin Compatibility

Yes Normal
No Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

Magnesium Laureth Sulfate is a valuable, mild surfactant highly effective in cleansing and lathering, making it a suitable and gentle option for a broad spectrum of skin types, including sensitive complexions, when integrated into well-formulated products.

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