Sodium hydroxide relaxers have an alkaline pH of:
11.5-14
Sodium hydroxide relaxers have a very high alkaline pH of around 13-14, which is significantly higher than the natural pH of hair and skin. This high pH breaks down the hair’s protein structure, softens the hair, and allows it to be molded into a straighter form. However, because it is such a strong chemical, it can be damaging to the hair and scalp if not properly applied or neutralized afterwards. It is important to always follow the manufacturer’s directions and use protective measures like gloves and barrier cream to minimize potential damage.
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