Answered: Define the concept of the chemistry of…

Chemistry In Focus

7th Edition

ISBN:9781337399692

Author:Tro, Nivaldo J.

Publisher:Tro, Nivaldo J.

Chapter15: The Chemistry Of Household Products

Section: Chapter Questions

Problem 7E

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Define the concept of the chemistry of a “permanent”—Making straight hair curly ?

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Hair is made of keratin, which is also present in nails as well, In hair, keratin molecules are arranged in straight bundles. These bundles are held together by disulphide bonds (-S-S-), which has a function of giving strength to the hair. These disulphide bonds present in the hair strand is made up of an amino acid known as cysteine. The cysteine of one keratin molecule forms a disulphide bond with another molecule of cysteine of keratin.

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