Chemistry & ProductsQuestion 67 of 484
In a cold permanent wave, which chemical acts as the reducing agent that breaks disulfide bonds?
a.Ammonium thioglycolate
b.Hydrogen peroxide
c.Sodium hydroxide
d.Sodium bromate
Explanation
Cold waves use ammonium thioglycolate (ATG) as the waving lotion. It is a reducing agent that breaks disulfide bonds at room temperature. The neutralizer (usually hydrogen peroxide or sodium bromate) then re-forms the bonds in the new shape.
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