Low irritation type multi-emulsifying sunscreen cosmetic and preparation method thereof

A cosmetic and low-irritation technology, which is applied in the field of low-irritation multi-emulsion sunscreen cosmetics and its preparation, can solve the problems of small molecular weight of sunscreen, easy penetration into the stratum corneum, and harm, so as to improve the sunscreen effect, prevent wrinkle aggregation, reduce Irritant and Potentially Harmful Effects

Active Publication Date: 2019-04-02
HUANAN IND TECH RES INST OF ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in oil-in-water or water-in-oil systems, most sunscreens are oily substances with high polarity and small mol

Method used

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  • Low irritation type multi-emulsifying sunscreen cosmetic and preparation method thereof
  • Low irritation type multi-emulsifying sunscreen cosmetic and preparation method thereof
  • Low irritation type multi-emulsifying sunscreen cosmetic and preparation method thereof

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Embodiment 7

[0032] This embodiment provides a method for preparing a low-irritation multiple emulsified sunscreen cosmetic, the method comprising the following steps:

[0033] (1) Heat the oil-phase sunscreen until completely dissolved, cool to below 40°C, and confirm that no crystals are precipitated to form oil phase A; the oil-phase sunscreen is 0.5 parts of ethylhexyl methoxycinnamate and 0.5 parts Mixture of cetyl ethylhexyl ester.

[0034] (2) Add the preservative and chelating agent into water, and mix uniformly to form a water phase; wherein the chelating agent is 0.02 part of disodium EDTA, the preservative is 0.1 part of phenoxyethanol and 0.05 part of ethylhexylglycerin.

[0035] (3) Add the emulsifier into the water phase of step (2), heat to dissolve, stir evenly, cool to below 40°C, and then add the oil phase A of step (1) into the water phase under homogeneous conditions , to form colostrum in which the emulsifier is a mixture of 0.8 parts PEG-60 hydrogenated castor oil an...

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Abstract

The invention provides a low irritation type multi-emulsifying sunscreen cosmetic comprising the following components in parts by weight: 30-60 parts of colostrum, 10-20 parts of hydrophobic modifiedtitanium dioxide or zinc oxide, 10-40 parts of grease, 1-5 parts of silicon gel, and 1-10 parts of an organosilicone resin film-forming agent. The sunscreen cosmetic oil has an oil-in-water-in-oil (O/W/O) or oil-in-water-in-silicone oil (O/W/Si) structure, so that the oil phase sunscreen agent is wrapped in an innermost layer and the film-forming agent is added in an outermost layer. On one hand,according to the structure, the innermost-layer oil-phase sunscreen agent can be spread on the film-formed outermost phase, so that the sunscreen agent can be evenly distributed on the skin surface and is not easy to fold and gather, and thus the overall sunscreen effect is improved; on the other hand, the film-formed outermost phase can also prevent the oil-phase sunscreen agent from penetratinginto a cuticle layer, so the irritation and potential hazards of the oil-phase sunscreen agent are reduced, and the sunscreen effect and safety performance are improved.

Description

technical field [0001] In the field of cosmetics, the present invention particularly relates to a low-irritation multi-emulsion sunscreen cosmetic and a preparation method thereof. Background technique [0002] Most of the sunscreen cosmetics on the market are generally oil-in-water or water-in-oil systems, and approved sunscreen oils such as ethylhexyl methoxycinnamate are either internal phase or external phase. Such a production process It has the characteristics of convenient and simple operation. [0003] However, in oil-in-water or water-in-oil systems, most sunscreens are oily substances with high polarity and small molecular weight, which are more likely to penetrate deep into the stratum corneum, causing irritation or other potential hazards. [0004] Therefore, it is an urgent problem to be solved in this field to seek a kind of low irritation type multiple emulsification sunscreen cosmetics. Contents of the invention [0005] The present invention utilizes the...

Claims

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Application Information

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IPC IPC(8): A61K8/06A61K8/27A61K8/29A61K8/37A61K8/44A61K8/58A61K8/891A61Q17/04
CPCA61K8/066A61K8/27A61K8/29A61K8/37A61K8/44A61K8/585A61K8/891A61K2800/72A61Q17/04
Inventor 钟晓明何杨鹏
Owner HUANAN IND TECH RES INST OF ZHEJIANG UNIV
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