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Sunscreen cosmetic

A technology of cosmetics and oil phase thickeners, which is applied in the direction of cosmetics, cosmetic preparations, dressing preparations, etc., can solve the problems of reduced ultraviolet defense effect and poor water resistance, and achieve improved ultraviolet defense, excellent water resistance, high The effect of UV protection effect

Pending Publication Date: 2022-07-29
SHISEIDO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] On the other hand, although silica is not a plastic bead, it has poor water resistance, so when it comes into contact with water, sweat, etc., the UV protection effect tends to decrease compared to immediately after coating.

Method used

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  • Sunscreen cosmetic
  • Sunscreen cosmetic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6 and comparative example 1～4

[0125] Water-in-oil type sunscreen cosmetics having the compositions described in Tables 1 and 2 below were prepared. According to the above-mentioned evaluation method, the improvement rate of ultraviolet-ray defense power (SPF improvement effect), the change rate of the absorbance integrated value after a water bath (Abs change rate after a water bath), and usability were evaluated.

[0126] [Table 1]

[0127]

[0128] Wax powder A: carnauba wax with a volume average particle size of 6 to 8 μm

[0129] Wax powder B: mixed wax of carnauba wax and rice bran wax with a volume average particle size of 4 to 14 μm

[0130] Wax powder C: carnauba wax with a volume average particle diameter of 100 μm

[0131] Spherical silica: volume average particle size 5 μm

[0132] [Table 2]

[0133]

[0134] Wax powder A: carnauba wax with a volume average particle size of 6 to 8 μm

[0135] As shown in Table 1 above, when an oil-phase thickener and a UV-shielding agent were containe...

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Abstract

The purpose of the present invention is to provide a sunscreen cosmetic by combining an environmentally friendly and highly water-resistant powder component that replaces plastic microbeads and silica. The present invention relates to an ultraviolet-ray protective film which can achieve a high ultraviolet-ray protective power even with a small amount of an ultraviolet-ray protective agent, has a property in which the ultraviolet-ray protective effect is improved when the film is in contact with water, sweat, or the like compared to just after coating, and has excellent usability. This sunscreen cosmetic is characterized by containing (A) an oil-phase thickener, (B) a UV-resistant agent, and (C) a wax powder having a volume average particle diameter of 1-30 [mu] m.

Description

technical field [0001] The present invention relates to sunscreen cosmetics. More specifically, it relates to a sunscreen cosmetic which can achieve high UV protection by mixing an oil-phase thickener and a predetermined wax powder without mixing a large amount of a UV protection agent, and has the ability to prevent contact with water, sweat, or the like. Compared with the characteristics immediately after application, the UV protection effect is improved, and the usability is also excellent. Background technique [0002] Protecting the skin from UV rays is one of the important issues in skin care and body care. In order to minimize the adverse effects of UV rays on the skin, various UV care cosmetics have been developed. Sunscreen cosmetics, which are one of UV care cosmetics, absorb or scatter UVA and UVB by covering the skin with a coating film containing an ultraviolet absorbing agent, an ultraviolet scatterer, or the like, and suppressing ultraviolet rays reaching the...

Claims

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Application Information

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IPC IPC(8): A61K8/25A61K8/06A61K8/35A61K8/37A61K8/40A61K8/73A61Q17/04
CPCA61K8/37A61Q17/04A61K8/022A61K2800/412A61K8/922A61K8/31A61K8/732A61K8/604A61K2800/48A61K2800/31A61K8/25
Inventor 岩见志保渡边百合香
Owner SHISEIDO CO LTD
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