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Application of chitosan in cosmetic preparation

A technology of chitosan and cosmetics, applied in the application field of chitosan in the preparation of cosmetics

Inactive Publication Date: 2014-07-23
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chitosan has certain moisture retention and wettability, but most of the current reports only focus on the effect of chitosan as a single humectant (Li Xin, Yi Junpeng. Preparation of chitosan and its derivatives and moisturizing and moisture absorption Pe

Method used

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  • Application of chitosan in cosmetic preparation
  • Application of chitosan in cosmetic preparation
  • Application of chitosan in cosmetic preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the solubility contrast of chitosan in lactic acid and hydrochloric acid

[0026] Choose the same concentration of lactic acid and hydrochloric acid to dissolve chitosan, and compare the solubility properties, as shown in Table 1.

[0027] The solubility contrast of table 1 chitosan in lactic acid and hydrochloric acid

[0028]

[0029]The results in Table 1 show that when dissolving chitosan at the same concentration, the pH value of the lactic acid solution reaches about 6, while that of the hydrochloric acid solution is close to about 1, which is not suitable for cosmetic applications. The solubility of chitosan in hydrochloric acid is not high, the pH value is about 3, the solubility of chitosan is very low, the pH value is greater than 3, chitosan is almost insoluble in hydrochloric acid. The experimental results show that the solubility of chitosan in lactic acid is obviously better than that of strong hydrochloric acid, and the solution system i...

Embodiment 2

[0030] Embodiment 2: Research on the moisture retention of chitosan in the water preparation system

[0031] According to the formula in Table 2, different concentrations of chitosan water products were given to 5 volunteers (aged 35-50 years old) for trial respectively. The trial site was the inner forearm, and the skin moisture content test and skin surface water loss evaluation test were used as detection indicators. , to evaluate the skin moisturizing properties of chitosan. Lactic acid and glycerin were used as blank controls, which were recorded as 1# and 2# respectively. 4# is the formula of the present invention. Experimental conditions: temperature is 25±2°C, humidity is 50±10%.

[0032] Table 2 chitosan water formulation

[0033]

[0034] Depend on figure 1 The results show that the moisturizing effect of 3# using chitosan alone is equivalent to that of glycerin, but it lasts longer than glycerin. 4# shows that increasing the amount of chitosan has a moisturiz...

Embodiment 3

[0035] Embodiment 3: Research on the moisture retention of chitosan in emulsified system

[0036] According to the formula in Table 3, different concentrations of chitosan cream products were given to 5 volunteers (age 35-50 years old) for trial respectively. The trial site was the inner forearm, and the skin moisture content test and the skin surface water loss evaluation test were used for detection. Index to evaluate the skin moisturizing properties of chitosan. Glycerin was used as the blank control, which was recorded as 1#. 3# is the formula of the present invention. Experimental conditions: temperature is 25±2°C, humidity is 50±10%.

[0037] Formulation of table 3 chitosan cream

[0038]

[0039] Depend on image 3 The results show that the moisturizing properties of 2# and 3# chitosan and glycerin compounding are significantly better than using glycerin alone as a humectant, and it lasts longer than glycerin. 4# shows that chitosan and glycerin compounding If t...

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Abstract

The invention provides an application of chitosan in cosmetic preparation, and relates to chitosan. According to the application of chitosan in cosmetic preparation, chitosan is high-molecular chitosan with relative molecular weight of 20000 to 30000; the cosmetic is a shampoo composition comprising a phase A and a phase B, wherein the phase A comprises the following materials by mass percent: 69.13 to 77.27% of deionized water, 14 to 16% of sodium laureth sulfate, 4 to 6% of coconut oil amide diethanolamine, 4 to 6% of cocamidopropyl betaine, 0.5 to 2% of lactic acid, and 0.2 to 0.8% of chitosan; and the phase B is 0.03 to 0.07% of preservative by mass.

Description

technical field [0001] The present invention relates to chitosan, especially relates to the application of chitosan in the preparation of cosmetics. Background technique [0002] Chitosan is the product of deacetylation of chitin, and it is one of the few cationic polymers in natural polysaccharides. The appearance of chitosan is white or light yellow translucent flaky solid with a slight pearl luster, soluble in most dilute acids. As a natural cationic biopolymer, chitosan has many unique functions, such as moisture retention, wettability, film-forming property, antistatic effect, soft and protective effect on hair, etc. At present, it has been widely used in textile printing and dyeing, medicine, food, cosmetics and other fields. Therefore, the development of chitosan series of natural efficacy products has attracted more and more attention. [0003] Although chitosan has good application potential, because they are linear polymers with regular molecular structure and h...

Claims

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Application Information

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IPC IPC(8): A61K8/73A61Q5/02A61Q5/12A61Q19/00
Inventor 沈亮卢英华肖宗明吐松姚传义敬科举凌雪萍吴意珣
Owner XIAMEN UNIV