hi may have SOLUTION for all types of hair,,,,ethnic, curly wavy etc..we use keratan, kocopelli, har straightner and it last for months see your local hair dresser it cot on average 250.00 great price great hair no jokeread about it,,,great hair i am hairdresser and it works also on processed hair too,,but not for thin hair like mine,,thanks look it up,,or go see it done,,,,thanks again,,joanie rizz,,,,,,,,,,,,,,,,