SLES 70% is sodium laureth sulfate supplied as a viscous paste with 70% active matter — the rest is mostly water with small amounts of unsulfated material and salts.
It is produced by ethoxylating lauryl alcohol (to an average of about 2 ethylene oxide units), then sulfating and neutralizing. That ethoxylation step is what makes SLES milder than SLS and gives it the dense, creamy foam consumers expect from quality shampoo.
Typical uses: shampoos, body washes, facial cleansers, hand soaps and liquid detergents — usually paired with cocamidopropyl betaine (CAPB) for extra mildness and foam stability. A 28% liquid grade also exists for plants that prefer easy pumping over freight efficiency.
When buying, check active matter, 1,4-dioxane limit, unsulfated matter, salts and color on the COA. Details in our SLES 70% buyer’s guide and on the SLES product page.