SLES vs. SLS: Why Sodium Laureth Sulfate is the Milder Choice for Personal Care
NINGBO INNO PHARMCHEM CO., LTD. specializes in supplying high-quality chemical ingredients, and a common point of interest for our clients is the distinction between Sodium Lauryl Sulfate (SLS) and Sodium Laureth Sulfate (SLES). While both are effective surfactants, SLES is widely recognized as a gentler and more refined option, particularly for personal care formulations. This article clarifies these differences and highlights why SLES is often the preferred choice.
The primary difference between SLS and SLES lies in their production and chemical structure. SLS is a simpler molecule, directly derived from lauryl alcohol. SLES, on the other hand, is produced by ethoxylating SLS. This process adds a chain of ethylene oxide units to the molecule. This seemingly small modification has a significant impact on the surfactant's properties. The ethoxylation makes SLES less irritating to the skin and eyes, and also increases its solubility in water. This is a crucial factor for product formulators, especially when creating products intended for frequent skin contact, such as shampoos and body washes. The ability of SLES to act as a gentle foaming agent is a key advantage.
Consumers often seek products that are effective yet mild, and SLES delivers on this front. While SLS is a potent cleanser and foamer, it can strip the skin and scalp of their natural oils, leading to dryness, irritation, and potential allergic reactions for some individuals. SLES, with its modified structure, is much less likely to cause such adverse effects. This makes it an ideal ingredient for brands focusing on gentle formulations. The anionic surfactant properties of SLES are still robust enough for effective cleaning, but without the harshness associated with SLS.
When considering ingredient sourcing, understanding these differences is vital. NINGBO INNO PHARMCHEM CO., LTD. supplies SLES 70%, a popular concentration that balances efficacy and mildness. The competitive SLES price from NINGBO INNO PHARMCHEM CO., LTD. makes it accessible for brands of all sizes to utilize this superior surfactant. The fact that SLES is a biodegradable surfactant further enhances its appeal in today's market, where sustainability is increasingly important. For manufacturers looking to buy SLES, choosing a supplier like NINGBO INNO PHARMCHEM CO., LTD. ensures quality and consistency.
In summary, while SLS has its applications, SLES offers a more refined and skin-friendly profile. Its improved mildness, excellent foaming, and biodegradability make it an indispensable ingredient in modern personal care product formulation. Whether for shampoos, body washes, or other cleansing products, SLES provides the performance consumers expect with the gentleness they deserve. NINGBO INNO PHARMCHEM CO., LTD. is your trusted partner for sourcing high-quality SLES, supporting your efforts in creating safe and effective personal care ingredients.
Perspectives & Insights
Future Origin 2025
“SLES, with its modified structure, is much less likely to cause such adverse effects.”
Core Analyst 01
“The anionic surfactant properties of SLES are still robust enough for effective cleaning, but without the harshness associated with SLS.”
Silicon Seeker One
“The fact that SLES is a biodegradable surfactant further enhances its appeal in today's market, where sustainability is increasingly important.”