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US 10,588,839 B2Granted
Method of shaping hair
AssigneeConopco, Inc.
InventorsEzat Khoshdel, Prem Kumar Cheyalazhagan Paul, Susan Pye
Life of this patent
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Abstract
The invention provides a method of shaping hair comprising the following sequential steps: (i) treating the hair by topical application of a hair treatment composition comprising from 2 to 25 wt % of one or more C2-4 monoaldehydes, and (ii) mechanically shaping the treated hair.
Claims10
A method of straightening hair comprising the following sequential steps:
- (i) treating the hair by topical application of a hair treatment composition comprising:
- a mixture of glyceraldehyde;
- and
- an additional hair straightening active selected from citric acid or lysine;
- and
- (ii) mechanically straightening the treated hair with a hot tool with an operating temperature ranging from 120 to 220° C., or by combing it into a straightened configuration at a temperature from 20 to 30° C.;
- wherein:
- the combined level of glyceraldehyde and citric acid or lysine ranges from 4 to 15 wt %, based on the total weight of the hair treatment composition;
- the weight ratio of the glyceraldehyde to the citric acid or lysine in the mixture ranges from 3:1 to 2:3;
- and
- wherein the method does not break hair disulfide bonds;
- the hair treatment composition does not include reducing agents.
9 more elements
A method of straightening hair comprising the following sequential steps:
- (i) treating the hair by topical application of a hair treatment composition comprising:
- a mixture of glyceraldehyde;
- and
- an additional hair straightening active selected from citric acid or lysine;
- and
- (ii) mechanically straightening the treated hair at a temperature from 20 to 30° C.;
- wherein:
- the combined level of glyceraldehyde and citric acid or lysine ranges from 4 to 15 wt %, based on the total weight of the hair treatment composition;
- and
- the weight ratio of the glyceraldehyde to the citric acid or lysine in the mixture ranges from 5:1 to 1:2 wherein the method does not break hair disulfide bonds and wherein the hair treatment composition does not include reducing agents.
7 more elements
Dependencies are inferred from the claim text.