Permanent hair straightening, also known as Japanese hair straightening or thermal reconditioning, is a popular hair treatment that promises to give you sleek, smooth and frizz-free hair for months. The treatment works by breaking down the hair's structure and then reshaping it to make it straight. The process can take anywhere from 2 to 8 hours, depending on the length and thickness of your hair, and the results can last for up to 6 months.
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