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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.
A relaxer is a type of lotion or cream generally used by people with tight curls or very curly hair which makes hair easier to straighten by chemically "relaxing" the natural curls. The active agent is usually a strong alkali, although some formulations are based on ammonium thioglycolate or formaldehyde.
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 ...
The curl-perm process adds body and volume to flat or straight hair, giving it more volume and making it easier to style. More specifically, it depends on your hair texture and what you’ve done ...
From the price to safety, here's everything parents should know about curly perms. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach ...
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"Perming" is time and labor-intensive, and expensive to maintain. The chemicals required for the process often cause the wearer's natural hair to become brittle and dry. To maintain the look of the Jheri curl, wearers are required to apply a curl activator spray and moisturizers daily, and sleep with a plastic cap over the hair to prevent it ...
A chemical depilatory is a cosmetic preparation used to remove hair from the skin.Common active ingredients are salts of thioglycolic acid and thiolactic acids.These compounds break the disulfide bonds in keratin and also hydrolyze the hair so that it is easily removed.
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