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While
bleaching your hair, its structure goes through a significant change so you must use products that restore
its PH.
Why?
Bleaching
powder is alkaline. Due to this chemical property the cuticle (outermost layer
of hair) of hair expands and the bleaching powder penetrates.
After
having used alkaline products you must stop the expanding effect by applying
acid products (neutralizing) otherwise you hair will get damaged.
There
should be more acid bits remaining in your hair which contract hairs and
restore hair structure to the original condition.
