| abstract |
The invention relates to a treatment method for the permanent deformation of keratin materials, of the type comprising a reduction phase and an oxidation phase, the reduction phase being carried out by applying a composition to the keratin material to be treated. reducing agent containing at least one thiol, the keratin material being impregnated with at least one manganese salt prior to / or during the reduction step, characterized in that the keratin material is treated, during or after the reduction phase and before the oxidation phase, in the presence of at least one agent neutralizing the activity of the manganese salt in the oxidation dyeing processes. |