Patent ID: 8192730

Claim:
A method of straightening hair comprising the steps of (a) applying to the hair an aqueous composition comprising: (i) 0.1 to 7.9 wt % of the total formulation of a sugar lactone; ii) cationic surfactant of formula 1: [N(R 1 )(R 2 )(R 3 )(R 4 )] + (X) − Formula I in which R 1 , R 2 , R 3 , and R 4 are independently selected from (a) an aliphatic group of from 1 to 22 carbon atoms, or (b) an aromatic, alkoxy, polyoxyalkylene, alkylamido, hydroxyalkyl, aryl or alkylaryl group having up to 22 carbon atoms; and X is a salt-forming anion selected from halogen, acetate, citrate, lactate, glycolate, phosphate nitrate, sulphate, and alkylsulphate; and (iii) water; wherein the composition is rinsed from the hair up to 30 minutes after application; and wherein the sugar lactone within the composition is gluconolactone and wherein the weight ratio of glucanolactone to total cationic surfactant is in the range of 1:3 to 10:1.