Cold Perm (All Hair Length)
Jj399 Hair Studio (Ratchada Branch)
The chemical used in cold perms is alkaline, with a pH between 8.2 and 9.6, or around the pH of baking soda. Your salon may also call a cold perm a ceramic perm. In a cold perm, the ammonium thioglycolate breaks the disulfide bonds within the hair to make it curl. Then, a neutralizer is applied to bring the pH back to normal.
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฿999
฿1,500
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