Question: Permanent waving requires a two - step process, one to break the disulfide bonds between keratin fibers using sodium sulfate, although at a lower concentration
Permanent waving requires a twostep process, one to break the disulfide bonds between keratin fibers using sodium sulfate, although at a lower concentration than used in chemical depilatories, and the other to reform the disulfide bonds using an oxidizer like hydrogen peroxide.
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