an acquired hair-shaft deformity associated with thermal hairdressing procedures (hairdryers, hot tongs, straightening irons – which employ great heat – up to 230° C). Chemical straightening, relaxing colouring/de-colouring processes may exacerbate the vulnerability to bubbling. Hair-shafts were not designed to be exposed to these procedures.
Microscopical examination of the hair-shaft reveals numbers of bubble-like lesions which are actually gas filled cavities created by the rapid vaporization of moisture within the hair-shaft.
The degree of bubbling therefore increases with higher levels of heat and moisture content.
All hair will react this way to intense heat.
The structure of the hair-shaft will be weakened by bubbling and fragility will result.
There is no way of repairing hair-shafts damaged in this way.
Treatment: Prevention through avoiding the cause.