Question: what is the difference between sodium lauryl sulphate and sodium laureth sulphate?
Answer: Sodium Lauryl Sulfate (SLS) is actually the parent chemical that is modified to make Sodium Laureth Ether Sulfate (SLES). It's created by reacting lauryl alcohol with petroleum or with coconut or palm oil. To derive SLES from SLS, a process called ethoxylation (in which ethylene oxide is introduced) has to take place.