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Semi-permanent ways to straighten curly, frizzy or wavy hair

A semi-persistent, hair technology, applied in the direction of curling or perming devices, pharmaceutical formulations, hair care, etc., can solve the problem of ineffectiveness, high pyruvic acid concentration range, and achieve the effect of reducing volume and number of curls

Active Publication Date: 2016-04-13
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, the concentration range of pyruvate (2-8 molar) is too high for the acid to be effective in the following hair washes

Method used

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  • Semi-permanent ways to straighten curly, frizzy or wavy hair
  • Semi-permanent ways to straighten curly, frizzy or wavy hair
  • Semi-permanent ways to straighten curly, frizzy or wavy hair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Water ……………………………………………… 95.5 grams

[0040] Glyoxylic acid………………………………… 4.5 g (0.6 mol)

Embodiment 2

[0042] Water ……………………………………………… 90 grams

[0043] Glyoxylic acid…………………………………… 10 g (1.35 mol)

Embodiment 3

[0045] Water ………………………………………………… 85.5 grams

[0046] Glyoxylic acid …………………………………… 14.5 g (1.9 mol)

[0047] Pre-wash your hair with your usual shampoos, allowing these solutions to come into contact with the washed hair.

[0048] The solution is then applied to the hair with a stiff brush.

[0049] The hair is covered with a plastic cap to reduce water evaporation and left in contact with the solution for 30, 60, 120 minutes and then dried with a conventional hair dryer.

[0050] Once dry, the hair was straightened with a straightening iron heated to an average temperature of about 210°C.

[0051] Finally, hair is shampooed and dried.

[0052] After treatment, the hair is shiny, straight, soft to the touch and has a particularly pleasing general shape.

[0053] Experimental tests were carried out for hair straightening effects, evaluating the reduction in hair volume and curvature.

[0054] In particular, a comparative test was carried out comparing the straightening eff...

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Abstract

The present invention relates to the treatment of human hair by means of a solution of glyoxylic acid which when used in combination with mechanical straightening by means of a hair straightening iron set at a temperature of about 200°C + / - 30°C Alkyd acid solutions semi-permanently change the shape of hair from frizzy and / or frizzy to straight and last at least six consecutive washes with water and shampoo.

Description

technical field [0001] The present patent application belonging to an industrial invention relates to a method for semi-permanently straightening curly, frizzy or wavy hair based on the combined use of glyoxylic acid and temperatures above 150°C. Background technique [0002] The structure of human hair fibers (or hair) is described in detail in US6517822B1. [0003] The techniques currently used to straighten curly or frizzy hair can be divided into three categories: [0004] a. Use an electric heating plate (temperature higher than 100°C), which is mainly composed of two hot plates, for simple treatment. The hair is placed between the two hot plates and squeezed to obtain the desired shape. [0005] b. Chemical treatment plus low-temperature mechanical treatment: use of chemical substances which, after being applied to the hair and treated at a temperature below 100°C, can cause changes in the hair. [0006] c. Chemical treatment plus high temperature mechanical treatmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A45D7/06A61K8/36A61Q5/04
CPCA61K8/36A61K8/365A61Q5/04A45D7/06A61K8/35
Inventor A.曼诺齐
Owner KAO CORP