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Perm agent composition taking pure cysteamine as reducing agent

A technology of cysteamine and perm agent, which is applied in the field of perm composition containing pure cysteamine as a reducing agent, can solve problems such as difficult to achieve the effect, achieve reduction in perm time, easy penetration and absorption, and reduce unpleasant smell The effect of the smell

Inactive Publication Date: 2016-02-17
李达
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method will bring about some improvement, it is difficult to achieve the fundamental effect

Method used

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  • Perm agent composition taking pure cysteamine as reducing agent
  • Perm agent composition taking pure cysteamine as reducing agent
  • Perm agent composition taking pure cysteamine as reducing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Table 1: When different reducing agents are used in the perm agent, the amount of alkaline substances that need to be added under the same reducing agent concentration and the same pH requirements:

[0026] name molecular weight PH value of 10% solution L-cysteine ​​hydrochloride monohydrate 175.63 1.0～1.5

[0027] L-cysteine 121.13 4.0～5.0 Thioglycolic acid 92.19 1.0～2.0 cysteamine hydrochloride 113.65 3.5～4.5 Pure Cysteamine (HS-CH2-CH2-NH2) 77.15 9.0～10.0

[0028] Test conditions: reducing agent concentration: 0.5 equivalent, pH value: 9.5, alkaline substance: monoethanolamine, capacity: 100 grams of perm.

[0029] form two,

[0030]

[0031] Table 2 results, when pure cysteamine (HS-CH2-CH2-NH2) is used as reducing agent, there is no need to add alkaline substances.

Embodiment 2

[0033] The substances listed in Table 1 are used as the reducing agent in the first dose of perm agent, and the same concentration is used to detect their perm effect under the following conditions, which are listed in Table 3. (D: Indicates weak, C: Indicates general, B: Indicates good, A: Indicates excellent)

[0034] Test conditions: hair: healthy hair, reducing agent concentration: 0.5 equivalent, PH value: 9.5, alkaline substance: monoethanolamine, storage time after curling: 30 minutes, without heating, oxidizing agent: hydrogen peroxide;

[0035] Table 3 shows that the curly hair effect of the perm agent using pure cysteamine (HS-CH2-CH2-NH2) as the reducing agent of the present invention reaches an excellent level.

[0036]

[0037] Determination of the perm effect when the concentration of the reducing agent in the perm agent is the same;

example 3

[0038] Example three: take pure cysteamine (HS-CH2-CH2-NH2) as the damage test of the perm agent of reducing agent to hair;

[0039] Under the following conditions, detect the damage degree of the perm agent of the present invention with pure cysteamine (HS-CH2-CH2-NH2) as reducing agent to the hair damage list in Table 4, in order to compare the damage degree, the comparative object has selected cysteine Amine hydrochloride.

[0040] Test conditions: hair: healthy hair, reducing agent concentration: 0.5 equivalent, PH value: 9.5, alkaline substance: monoethanolamine, storage time after curling: 30 minutes, without heating, oxidizing agent: hydrogen peroxide;

[0041] Form Four

[0042]

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Abstract

The invention discloses a perm agent composition taking pure cysteamine as a reducing agent. The perm agent composition with a pH (potential of hydrogen) value ranging from 8.5 to 10 is prepared from, by weight, 0.1-100% of the pure cysteamine, 1.0-5% of surfactants, 0.05-1% of hair protective agents, 0.1-3% of stabilizers, 3-15% of moisturizing agents, 0.1-3% of metal complexing agents and a proper quantity of purified water. The perm agent composition taking the pure cysteamine as the reducing agent has the advantages that by the aid of the pure cysteamine, the pH value can reach 8.5-10 without addition of any alkaline substance, so that epidermal layers of hair are expanded and softened; the pure cysteamine (HS-CH2-CH2-NH2) with salt removed is smaller in molecular weight, permeation and absorption are easier, and accordingly perming time is shortened; owing to no addition of any alkaline substance, byproducts are reduced greatly, hair damage degree is decreased, and residual unpleasant smell after perming is reduced to a great extent.

Description

technical field [0001] The invention relates to the technical field of hair perm applications, in particular to a hair perm composition containing pure cysteamine as a reducing agent. Background technique [0002] Each hair consists of epidermis, cortex, and medulla. The cortical layer, which is the main part of the hair, accounts for 80% of the hair. The cortical layer is composed of elastic and rich keratin, and the keratin is linked by polypeptides composed of various amino acids. Hydrogen bonds are distributed between polypeptides. Polymer substances such as salt bonds and disulfide bonds form a helical structure with rich elasticity, so they will return to their original state when bent by an external force. The principle of a perm is to break the disulfide bond first, and then reorganize it to permanently bend or straighten it. The basic process of perming is divided into two steps. The first step is that under the action of a dose of perm agent, about 45% of the sec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/46A61Q5/04
CPCA61K8/46A61K2800/30A61Q5/04
Inventor 李娜
Owner 李达
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