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Water-in-oil type emulsion sunscreen cosmetics

A water-in-oil type, cosmetic technology, applied in the direction of cosmetics, cosmetic preparations, dressing preparations, etc., can solve problems such as odor, and achieve the effect of preventing stability and excellent ultraviolet blocking effect

Inactive Publication Date: 2009-03-18
SHISEIDO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Octocrylene is a commonly used UV absorber, but when combined with water-in-oil type sunscreen cosmetics, a UV scatterer that has undergone hydrophobization treatment may cause a problem of odor over time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8

[0067] [Examples 1-8, Comparative Examples 1-3]

[0068] Sunscreen cosmetics were prepared according to the formulations shown in Tables 1-2 below.

[0069] Specifically, add (8) [Part B] to (1) ~ (7) [Part A], disperse uniformly, then add (9) ~ (11) [Part C] to it, disperse uniformly, and then slowly (12)-(19) [part D] was added and emulsified to prepare.

[0070] [Prevention and suppression of odor stability]

[0071] With respect to the obtained sunscreen cosmetics (sample), each anti-odor suppression stability was evaluated according to the following evaluation criteria. The results are shown in Tables 1-2.

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PUM

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Abstract

An object of the present invention is to provide a water-in-oil type emulsion sunscreen cosmetic which can achieve excellent UV protection capability and have excellent effects in the prevention and inhibition stability of smell change with the passage of time. The water-in-oil type emulsion sunscreen cosmetic in the present invention is characterized by comprising 0.2 to 10 % by mass (a) octocrylene, 0.2 to 30 % by mass (b) hydrophobized titanium dioxide and / or zinc oxide, 0.02 to 8 % by mass (c) phenylbenzimidazole sulfonate, (d) a neutralizer for the above-mentioned component (c), and further, if desired, 0.01 to 20 % by mass (e) silicone surfactant.

Description

[0001] related application [0002] This application claims priority from Japanese Patent Application No. 2006-041831 filed on February 20, 2006, which is incorporated herein by reference. technical field [0003] The present invention relates to water-in-oil emulsified sunscreen cosmetics. More specifically, it relates to a water-in-oil type emulsified sunscreen cosmetic that fully exhibits excellent ultraviolet protection ability and has excellent stability in preventing and suppressing odor over time. Background technique [0004] Usually, in order to block the irradiation of ultraviolet rays to the skin to obtain a high SPF (sun protection factor) value, an ultraviolet absorber is blended in sunscreen cosmetics, or an ultraviolet scattering agent (zinc oxide, titanium dioxide, etc.) is blended (see, for example, patent documents 1 to 2 ). [0005] Octocrylene is a commonly used UV absorber, but when used in combination with a hydrophobized UV scatterer in water-in-oil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/40A61K8/06A61K8/27A61K8/29A61K8/41A61K8/49A61K8/894A61Q17/04
CPCA61K8/27A61K8/4946A61Q17/04A61K8/40A61K8/064A61K8/29A61K8/49A61K8/06
Inventor 高仓喜仁山口和弘
Owner SHISEIDO CO LTD
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