Patent ID: 7754193

Claim:
A reducing composition for permanently reshaping keratin fibers, comprising: ammonium bicarbonate and at least one other alkaline agent chosen from aqueous ammonia and ammonium salts other than ammonium bicarbonate, such that these compositions have a molar concentration ratio R of the following formula: R = total ⁢ ⁢ number ⁢ ⁢ of ⁢ ⁢ moles ⁢ ⁢ of ⁢ ⁢ ammonium - number ⁢ ⁢ of ⁢ ⁢ moles ⁢ ⁢ of ⁢ ⁢ ammonium ⁢ ⁢ bicarbonate number ⁢ ⁢ of ⁢ ⁢ moles ⁢ ⁢ of ⁢ ⁢ ammonium ⁢ ⁢ bicarbonate wherein the ratio R is greater than 2.1; at least one non-cyclic cationic polymer chosen from polyamine and polyquaternary ammonium polymers chosen from polymers comprising the repeating units of formula (W): the molecular weight of which ranges from 9,500 to 9,900, and polymers comprising the repeating units of formula (U): the molecular weight of which is about 1,200, and at least one reducing agent; wherein when aqueous ammonia is present, it is present in an amount less than 3%, expressed as NH 4 OH, by weight relative to the total weight of the composition.