Method Employing Polyols When Chemically Modifying the Internal Region of a Hair Shaft

Abstract

A method for chemically modifying the internal region of the hair shaft comprising applying a monomer composition to the hair, wherein the monomer composition comprises an ethylenic monomer having a molecular weight of 500 g / mole or less; then rinsing the hair; then applying a conditioning composition to the hair, wherein the conditioning composition comprises a hydrophobic polyol and a hydrophilic polyol; and wherein the method comprises applying an initiator to the hair prior to rinsing the hair, wherein the initiator initiates the chemical modification.

Description

FIELD OF THE INVENTION[0001]A method for chemically modifying the internal region of the hair shaft comprising: applying a monomer composition to the hair, wherein the monomer composition comprises an ethylenic monomer having a molecular weight of 500 g / mole or less; then rinsing the hair; then applying a conditioning composition to the hair, wherein the conditioning composition comprises a hydrophobic polyol and a hydrophilic polyol; and wherein the method comprises applying an initiator to the hair prior to rinsing the hair, wherein the initiator initiates the chemical modification.BACKGROUND OF THE INVENTION[0002]Methods for chemically modifying the internal region of the hair shaft are already known. WO2009 / 088520A1 and EP-A-2295029 describe the use of ethylenic monomers to chemically modify the internal region of the hair shaft—in particular the ethylenic molecules may bond to the hair and / or to each other to form larger molecules e.g. polymers inside the hair. This increases t...

AI Technical Summary

Benefits of technology

The patent text describes a method for chemically modifying the internal region of hair by applying a monomer composition to the hair and then using an oxidising formulation to initiate the chemical modification. The use of an oxidising formulation helps to smooth down the hair shaft and prevent damage. The text also mentions the issue of static, which can result from the chemical modification, and proposes a solution using a combination of hydrophobic and hydrophilic polyols in an anhydrous conditioning composition to reduce static. The technical effects of this method include improved hair manageability, increased volume, and better control over the chemical modification process.

Problems solved by technology

Indeed, the latter may weight down the hair and detract from or even reduce the improved mechanical properties provided by the chemical modification.

Static causes so-called “fly away” hair, which may reduce the increased manageability of the hair resultant from the chemical modification.

However, experimentation surprisingly revealed that this was not the case.

Thus, it had not been previously identified that the increased static was actually caused by the application of the finishing conditioner on the hair.

This represents a large task for the experienced stylist and / or formulation technologist, since only little information is available on methods for chemically modifying hair employing ethylenic monomers.

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