Patent EP0083095A2 successfully refreshed from Google Patents.
EP0083095A2
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Method of reductively waving or straightening hair
Assignee: Helene Curtis Industries Inc
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Filing: 1982-12-23
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Granted: —
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Expires: 2002-12-23
Abstract
Abstract A method of reductively waving or straightening hair is disclosed in which a first composition containing a reducing agent capable of breaking hair disulfide is applied to the hair and maintained in contact with the hair to form partially reduced hair. The first composition is rinsed from the hair, and the temperature of the hair is raised and maintained at from about 35° C. to about 100° C., followed by neutralization to rebuild the hair disulfide bonds.
Inventors
- 👤 Du Yung Hsiung
- 👤 Chester A. Davis
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 10:36
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/04; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/23; A61K8/30; A61K8/46
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
136 words
A method of reductively waving or straightening hair comprising the steps of: applying a first composition containing a reducing agent capable of reductively breaking the disulfide bonds in hair keratin to contact hair fibers; maintaining said contact for a period of time sufficient to form partially reduced hair; rinsing said first composition substantially completely from said partially reduced hair; raising the temperature of the rinsed hair while in partially reduced condition to from about 35° C. to about 100° C., and maintaining said hair at said raised temperature for a period of about 1 to about 60 minutes, said hair being under a tensile force which is applied at any time prior to raising the temperature of said hair; and thereafter applying a neutralizing composition to the heated hair to rebuild the broken hair disulfide bonds.
Claim 2
Independent Claim
136 words
A method of reductively waving or straightening hair comprising the steps of: applying a first composition containing a reducing agent capable of reductively breaking the disulfide bonds in hair keratin to contact hair fibers; maintaining said contact for a period of time sufficient to form partially reduced hair; rinsing said first composition substantially completely from said partially reduced hair; raising the temperature of the rinsed hair while in partially reduced condition to from about 35° C. to about 100° C., and maintaining said hair at said raised temperature for a period of about 1 to about 60 minutes, said hair being under a tensile force which is applied at any time prior to raising the temperature of said hair; and thereafter applying a neutralizing composition to the heated hair to rebuild the broken hair disulfide bonds.
Claim 3
Dependent Claim
27 words
The method according to claim 1 wherein said first composition contains said reducing agent in an amount of from about 0.5 to about 30 percent by weight.
Claim 4
Dependent Claim
28 words
The method according to claim 1 wherein said first composition is maintained in contact with said hair for a period of from about 2 to about 30 minutes.
Claim 5
Dependent Claim
44 words
The method according to claim 1 wherein said rinsed, partially reduced hair, after being raised to a temperature of from about 35° C. to about 100° C., is maintained at said temperature for a total period of from about 2 to about 30 minutes.
Claim 6
Dependent Claim
16 words
The method according to claim 1 wherein said tensile force is applied externally to the hair.
Claim 7
Dependent Claim
24 words
The method of claim 5 wherein said external tensile force is applied prior to the application of said first composition to said hair fibers.
Claim 8
Dependent Claim
28 words
The method of claim 5 wherein said external tensile force is applied after the application of said first composition to said hair fibers and prior to said rinsing.
Claim 9
Dependent Claim
15 words
The method of claim 5 wherein said external tensile force is applied after said rinsing.
Claim 10
Dependent Claim
19 words
The method according to claim 5 wherein said external tensile force is provided by wrapping the hair on rollers.
Claim 11
Dependent Claim
33 words
The method according to claim 1 wherein said first composition is maintained in contact with said hair until at least about 10 percent of said disulfide bonds in said hair keratin are broken.
Claim 12
Independent Claim
145 words
A method of reductively waving or straightening hair comprising the steps of: applying a first composition containing about 0.5 to about 30 percent by weight of agent capable of reductively breaking the disulfide bonds in hair keratin to contact hair fibers; maintaining said contact for a period of time of from about 2 to about 30 minutes to form partially reduced hair; rinsing said first composition substantially completely from said partially reduced hair; raising the temperature of the rinsed hair while in partially reduced condition to from about 40° C. to about 55° C., and maintaining said hair at said temperature for a period of about 2 to about 30 minutes, said hair being wrapped on rollers at any time prior to raising the temperature of said hair; and thereafter applying a neutralizing composition to the heated hair to rebuild the broken hair disulfide bonds.
Claim 13
Independent Claim
145 words
A method of reductively waving or straightening hair comprising the steps of: applying a first composition containing about 0.5 to about 30 percent by weight of agent capable of reductively breaking the disulfide bonds in hair keratin to contact hair fibers; maintaining said contact for a period of time of from about 2 to about 30 minutes to form partially reduced hair; rinsing said first composition substantially completely from said partially reduced hair; raising the temperature of the rinsed hair while in partially reduced condition to from about 40° C. to about 55° C., and maintaining said hair at said temperature for a period of about 2 to about 30 minutes, said hair being wrapped on rollers at any time prior to raising the temperature of said hair; and thereafter applying a neutralizing composition to the heated hair to rebuild the broken hair disulfide bonds.
Claim 14
Dependent Claim
21 words
The method according to claim 11 wherein said hair is wrapped on rollers prior to the application of said first composition.
Claim 15
Dependent Claim
18 words
The method according to claim 11 wherein said hair is wrapped on rollers after applying said first composition.
Claim 16
Dependent Claim
16 words
The method according to claim 11 wherein said rinsed, partially reduced hair is wrapped on rollers.
Claim 17
Dependent Claim
48 words
The method according to claim 11 wherein said first composition includes a water-soluble thiol-containing reducing agent selected from the group consisting of a mercaptocarboxylic acid and the alkali metal or ammonium salt of a mercaptocarboxylic acid present at about 1 to about 20 weight percent of said composition.
Claim 18
Dependent Claim
22 words
The method according to claim 15 wherein said neutralizing composition includes an oxidizing agent capable of rebuilding said broken hair disulfide bonds.
Claim 19
Dependent Claim
28 words
The method according to claim 11 wherein said first composition includes a bisulfite ion reducing agent present at about 5 to about 15 weight percent of said composition.
Claim 20
Dependent Claim
26 words
The method of claim 17 wherein a portion of the disulfide bonds reduced by said bisulfite ion reducing agent are rebuilt prior to said heating step.
Claim 21
Independent Claim
179 words
A method of reductively waving or straightening hair comprising the steps of: I applying a first composition containing about 1 to about 20 weight percent of a water-soluble thiol-containing reducing agent capable of reductively breaking the disulfide bonds in hair keratin to contact hair fibers, said reducing agent being selected from the group consisting of a mercaptocarboxylic acid and the alkali metal or ammonium salts of a mercaptocarboxylic acid; maintaining said contact with said hair fibers for a period of from about 2 to about 20 minutes to form partially reduced hair; rinsing said first composition substantially completely from said partially reduced hair; raising the temperature of the rinsed, partially reduced, hair to from about 40° C. to about 55° C. and maintaining said hair at said temperature for a total of from about 2 to about 30 minutes, said hair being wrapped on rollers at any time prior to raising the temperature of said hair; and applying a second composition to the heated hair, said second composition containing an oxidizing agent capable of rebuilding said broken disulfide bonds.
Claim 22
Independent Claim
179 words
A method of reductively waving or straightening hair comprising the steps of: I applying a first composition containing about 1 to about 20 weight percent of a water-soluble thiol-containing reducing agent capable of reductively breaking the disulfide bonds in hair keratin to contact hair fibers, said reducing agent being selected from the group consisting of a mercaptocarboxylic acid and the alkali metal or ammonium salts of a mercaptocarboxylic acid; maintaining said contact with said hair fibers for a period of from about 2 to about 20 minutes to form partially reduced hair; rinsing said first composition substantially completely from said partially reduced hair; raising the temperature of the rinsed, partially reduced, hair to from about 40° C. to about 55° C. and maintaining said hair at said temperature for a total of from about 2 to about 30 minutes, said hair being wrapped on rollers at any time prior to raising the temperature of said hair; and applying a second composition to the heated hair, said second composition containing an oxidizing agent capable of rebuilding said broken disulfide bonds.
Claim 23
Independent Claim
140 words
A method of reductively waving or straightening hair comprising the steps of: applying a first composition containing about 5 to about 15 weight percent of a bisulfite ion reducing agent capable of reductively breaking the disulfide bonds in hair keratin to contact said hair; maintaining said contact for a period of from about 2 to about 20 minutes to form partially reduced hair; rinsing said first composition substantially completely from said partially reduced hair; wrapping said rinsed, partially reduced hair on rollers; raising the temperature of the wrapped, rinsed partially reduced hair to from about 40°C. to about 55°C. and maintaining said hair at said temperature for a total of from about 2 to about 30 minutes; and applying a second composition to the heated hair, said second composition containing an oxidizing agent capable of rebuilding said broken disulfide bonds.
Claim 24
Independent Claim
140 words
A method of reductively waving or straightening hair comprising the steps of: applying a first composition containing about 5 to about 15 weight percent of a bisulfite ion reducing agent capable of reductively breaking the disulfide bonds in hair keratin to contact said hair; maintaining said contact for a period of from about 2 to about 20 minutes to form partially reduced hair; rinsing said first composition substantially completely from said partially reduced hair; wrapping said rinsed, partially reduced hair on rollers; raising the temperature of the wrapped, rinsed partially reduced hair to from about 40°C. to about 55°C. and maintaining said hair at said temperature for a total of from about 2 to about 30 minutes; and applying a second composition to the heated hair, said second composition containing an oxidizing agent capable of rebuilding said broken disulfide bonds.
Claim 25
Dependent Claim
24 words
The method according to claim 20 including the additional step of rebuilding a portion of the broken disulfide bonds prior to said heating step.
Claim 26
Dependent Claim
42 words
The method according to claim 21 wherein said portion of the broken disulfide bonds are rebuilt by rinsing said first composition substantially from said partially reduced hair with a shampoo composition having a pH value of from about 8.5 to about 10.5.
References Cited (Backward Citations)
No citation records indexed.
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