Principle of ammonium thioglycolate
Ammonium thioglycolate is a compound that acts as a reducing agent. It is less harmful than thioglycolic acid, so it is commonly used.
When used as a permanent wave agent, it breaks down proteins by cutting the disulfide bonds of cystine in keratin to sulfhydryl groups. This means that, in permanent waves, it prevents bent hair from trying to eliminate...
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