YUKO hair straightening permanently straightens hair by physically changing the internal structure. Hair texture and the speed of growth, amongst the other factors, will determine how often you should have your hair straightened.
Brazilian/Keratin treatments temporarily coat hair with keratin to smooth hair. Brazilian/Keratin treatments will wash out after an average of 3 months, so you must visit a salon often to re-coat the hair with this method.
Traditional Brazilian/Keratin treatments may contain hazardous chemicals like formaldehydes which release highly carcinogenic gas.
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