Chemistry & ProductsQuestion 307 of 484
Which statement comparing sodium lauryl sulfate (SLS) and sodium laureth sulfate (SLES) is most accurate?
a.They are the same molecule with different brand names
b.SLS is non-foaming while SLES produces lather
c.SLS is cationic and SLES is anionic
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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