Is It Possible To Over Bleach My Hair?
There
are a number of reasons for over bleaching:
· Using
a hydrogen peroxide solution that is too strong
· Excessive
contact time during the application
· Excessive
processing time after the application with or without heat
· Overlapping
the bleach onto previously bleached hair
· Combing
bleach through from roots to points onto previously bleached hair
· Bleaching
hair that is in poor condition i.e. too porous, damaged by natural weathering
or previous chemical work, dehydrated (dry
brittle hair)
Dehydration is caused by the cuticle (the outer
protective layer) having been forced open, and whilst in its weakened state,
having been damaged or removed. When the cuticle is missing or lying unevenly,
the cortex of the hair is exposed to the elements, bringing about the loss of
moisture which can bring about breakage.
Once hair is chemically
damaged, breakage to a greater or lesser extent is inevitable. Damaged hair is porous, and will lose
moisture rapidly and it is this amount of loss that affects the dryness of the
hair.
Water content
is essential to the hair’s condition and elasticity. Normal handling of hair i.e. subsequent
shampooing, drying, tonging, combing is unavoidable, as these procedures are
part of the everyday grooming process.
Environmental weathering (sunlight, wind, rain and central heating etc.)
will also aggravate the now processed hair.
If
you use a bleach solution and a dryer, the dry heat may increase the speed at
which oxygen is produced. This can cause overheating and over-processing of the
hair, making it likely to break. Most Manufacturers do not advocate heat for
this reason. Manufacturer’s instructions should be read and adhered to fully,
including accuracy when measuring and mixing bleach with hydrogen peroxide.
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