Sodium Lauryl Ether Sulfate (SLES) 70% is a cornerstone ingredient for formulators in both the personal care and detergent industries. Its powerful cleaning, foaming, and emulsifying properties make it highly sought after, but achieving optimal results requires careful consideration of formulation techniques. At NINGBO INNO PHARMCHEM CO.,LTD., we provide high-quality SLES 70% and valuable insights to help you harness its full potential.

Understanding SLES 70% in Your Formulation:

SLES 70% is a concentrated anionic surfactant. Its typical concentration in finished products can range from low percentages in mild cleansers to higher concentrations in heavy-duty detergents. The key is to balance its effectiveness with other ingredients to achieve the desired performance without compromising safety or sensory appeal.

Key Formulation Considerations:

  • pH Adjustment: SLES 70% performs best in a slightly acidic to neutral pH range (typically 5-7). While it is stable in a broader range, maintaining the optimal pH ensures maximum efficacy and minimizes potential degradation or unwanted reactions with other ingredients. Always test the pH of your final product.
  • Compatibility with Other Surfactants: SLES 70% is highly compatible with a wide range of surfactants, including non-ionic and amphoteric types. Combining it with co-surfactants, such as Cocamidopropyl Betaine (CAPB) or Alpha Olefin Sulfonate (AOS), can enhance lather stability, increase viscosity, and improve overall mildness. For instance, pairing SLES 70% with CAPB can create a milder, better-foaming synergistic system.
  • Viscosity Building: The viscosity of SLES-based formulations can be adjusted using various thickeners. Salt (sodium chloride) is a common and cost-effective method for increasing the viscosity of anionic surfactant systems. Non-ionic thickeners like Cocamide DEA (or CMEA if a milder option is desired) can also be employed to achieve desired textures and improve foam quality.
  • Active Matter Content: When formulating, it's crucial to consider the active matter content of SLES 70%. This means understanding that the remaining percentage consists of water, salts, and possibly unsulfated matter. Accurate calculation based on active matter ensures consistent performance across batches.
  • Preservation: As SLES is often used in water-based formulations, proper preservation is essential to prevent microbial growth. Choose broad-spectrum preservatives that are compatible with anionic surfactant systems.
  • Sensory Enhancement: To improve the user experience, consider adding emollients, conditioning agents, or humectants. These ingredients can counteract any potential drying effects and provide skin-beneficial properties, especially in personal care products.

Specific Product Examples:

  • Shampoos: Combine SLES 70% with CAPB and a suitable thickener for a mild, high-lather shampoo. Add silicones or conditioning agents for hair benefits.
  • Dishwashing Liquids: SLES 70% provides excellent grease-cutting. Blending with LABSA (Linear Alkylbenzene Sulfonic Acid) can enhance detergency and provide a synergistic cleaning effect.
  • Body Washes: Use SLES 70% with mild co-surfactants and moisturizing agents to create a luxurious, skin-friendly cleansing experience.

By following these formulation tips, manufacturers can effectively leverage SLES 70% to create high-performance products that meet and exceed consumer expectations. NINGBO INNO PHARMCHEM CO.,LTD. is here to support your formulation journey with quality ingredients and expert advice.