Patent ID: 7488470

Claim:
A process for the permanent deformation and/or shaping of a keratinous substance, comprising: (i) applying to the keratinous substance a reducing composition (a) combining at least one reducing agent and at least one organic absorbing agent which is a crosslinked sodium carboxymethylcellulose, a modified starch, or mixtures thereof; (ii) placing the keratinous substance under mechanical tension before, during or after the application of step (i); (iii) applying a neutralizing composition (b) after a leave-in time necessary for reduction of the keratinous substance; and (iv) rinsing the keratinous substance after a leave-in time necessary for neutralization of the keratinous substance; wherein the reducing composition (a) is a ready-to-use reducing composition obtained by mixing, at the time of use, a reducing liquid comprising at least one reducing agent and an organic absorbing agent, the concentration of organic absorbing agent in the reducing composition (a) being between 7 and 11% by weight with respect to the total weight of the composition.