Sodium Lauroyl Methyl Isethionate (SLMI)

Sodium Lauroyl Methyl Isethionate (SLMI) – Mild Anionic Surfactant for Personal Care

Basic Information

• Product Name: Sodium Lauroyl Methyl Isethionate

• CAS Number: 928663-45-0

• Synonyms: SLMI

• Active Content: 75%

• Appearance: Flakes

Overview
Sodium lauroyl methyl isethionate (SLMI) is a new-generation anionic surfactant designed for use in shampoos, shower gels, facial cleansers, and soap bars. It offers excellent water solubility and works synergistically with other surfactants to provide a superior cleansing experience. Compared to sodium cocoyl isethionate (SCI), SLMI can be formulated into clear, transparent products and is even milder on the skin.

Key Benefits

• Mild and gentle – suitable for sensitive skin and baby care.

• Rich, creamy, and fine foam – provides a luxurious lather.

• Excellent water solubility – enables clear, transparent formulations.

• Compatible with a wide range of anionic, nonionic, and amphoteric surfactants.

• Easily rinseable – leaves no heavy, clogged residue.

• Reduces irritation from other surfactants (e.g., AES) and minimizes residue on hair.

• Biodegradable – environmentally friendly.

Applications

1. Facial cleansers: Gentle cleansing with fine, abundant foam; leaves skin feeling clean and refreshed without tightness; easier to rinse than other surfactant-based cleansers.

2. Shower gels: Provides a moisturizing feel and softness after use, improving dry skin conditions.

3. Shampoos: Reduces irritation from AES, minimizes surfactant residue on hair, and helps prevent scalp irritation and dandruff.

4. Soap bars: Can be used as the primary surfactant with fillers (pigments, fragrances, soap bases) to create moisturizing and mild cleansing bars.

Recommended Use
Typical usage levels: 5–30% of the formulation, depending on the desired cleansing and foam performance. Suitable for both cold and hot processing.

Handling and Storage

• Store in a cool, dry place, away from moisture and direct sunlight.

• Keep containers tightly sealed to prevent contamination.

• Use appropriate personal protective equipment (gloves, safety goggles) when handling.

Quality Assurance
Each batch is tested for active content, pH, and performance properties to ensure consistent quality.