Chemistry & ProductsQuestion 307 of 484
Which statement comparing sodium lauryl sulfate (SLS) and sodium laureth sulfate (SLES) is most accurate?
a.SLS is cationic and SLES is anionic
b.SLS is non-foaming while SLES produces lather
c.They are the same molecule with different brand names
d.SLES has added ethoxylate units that make it milder and less irritating to skin and scalp than SLS
Explanation
Both are anionic sulfate cleansers, but SLES has been ethoxylated (extra polyethylene glycol units inserted into the molecule). The added bulk makes SLES gentler on skin and eyes than the smaller, more aggressive SLS while keeping good foam.
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