Patent ID: 7879114

Claim:
A method for personalizing the permanent modification of a color of a type of keratinous fibres of a person comprising the steps of: a) selecting a color modification desired by the person; b) selecting a composition A according to the color modification selected in step a), wherein said composition A comprises from about 0.01% to about 10% of a reducing agent and from 0% to about 10% of a coloring compound, by weight of composition A; c) determining a type of keratinous fibres to be colored; d) selecting a composition B comprising an alkalizing compound, wherein composition B has a level of basicity selected according to the type of keratinous fibres selected in step c) and the type of color modification selected in step a); e) selecting a composition C comprising from about 1.5% to about 12% of an oxidizing compound by weight of composition C, wherein the amount of oxidizing compound is selected according to the type of color modification selected in step a) and the type of keratinous fibres selected in step c); f) mixing said compositions A, B and C to obtain a mixture, said mixture providing heat generated by an exothermic chemical reaction which provides a temperature that increases progressively from room temperature (RT) to a temperature ranging from about RT+3° C. to about RT+20° C.; g) applying said mixture to keratinous fibres immediately after the mixing of compositions A, B and C, for a suitable period of time for obtaining the color modification selected in step a; h) removing said mixture from said keratinous fibres.