Patent ID: 9427603
Filing Date: 2016-08-30
CPC Classification: A61K,A61Q

Claim Text:
1. A process for reducing hair damage upon treatment of hair by heat comprising the steps of: (1) providing a leave-in hair care composition comprising a silicone material and a cosmetically acceptable carrier, wherein the silicone material is a polydimethylsiloxane and is stable at a temperature up to 300° C.; (2) applying onto hair a sufficient amount of the hair care composition for treating hair; (3) providing a heat generating hair care appliance being a hot surface hair care appliance, wherein the hot surface hair care appliance is a hair dryer, a hot air hair styler, or a hair curler; (4) treating hair at a temperature ranging from about 90° C. to about 250° C. using the heat generating hair care appliance for from about 1 min to about 20 min for drying and/or styling hair; wherein the polydimethylsiloxane (P) has aminoalkyl groups and has an amine number of at least 0.1 meq/g of polydimethylsiloxane (P), and comprises units of formula I in which R 1 is methyl, an —OR radical, or an —OH radical, R 2 are aminoalkyl radicals of formula II R 3 is —(CH 2 ) 3 — R 4 is H, R 5 is —(CH 2 ) 2 —NH 2 —, a is 0, 1, 2 or 3, b is 0, 1, 2 or 3, and a+b on average is from 1.5 to 2.5, wherein not more than 9 mol % of the radical R 1 is OH or OR.