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The chemical solution used in the perming process is determined by the client's hair type and the pH of the solution. Classic alkaline perms are used for stronger, coarser hair. They work at room temperature and usually contain ammonium thioglycolate in the pH range of 9-10. Acid perms are used on more delicate or thinner hair.
The thioglycolic acid in the perm solution reduces the disulfide cystine bonds in the cortex of the hair. [2] In a sense, the thioglycolate removes crosslinks. After washing, the hair is treated with a mild solution of hydrogen peroxide, which oxidizes the cysteines back to cystine. These new chemical bonds impart the structural rigidity ...
Carol Yepes/Getty Images. 1. Use Volumizing Products Right Out of the Shower “I am a big believer in getting volume from the start,” Ess says.
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The hair of some Africans is elliptical in shape and therefore very tightly curled (east Asian hair tends to be round and European hair is in-between). The relaxer cream breaks down the chemical bonds of the hair shaft, disrupting the elliptical shape and reconstructing the bonds in a different way.
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