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Sunscreen cosmetic

A cosmetic, oil-soluble technology, applied in the field of oil-in-water emulsified compositions, can solve problems such as floating white, deterioration of use feeling, no inspiration, no record, etc., achieves improved UV protection ability, improved stability, and excellent UV protection The effect of defense

Inactive Publication Date: 2013-11-20
SHISEIDO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, the cosmetics described in Patent Documents 1 to 3 contain powders such as titanium oxide as an essential ingredient, and it is undeniable that this causes whitening and deterioration of the feeling of use.
In addition, there is neither description nor suggestion for an example of mixing a cross-linked polyether-modified silicone together with a preparation in which a poorly soluble ultraviolet absorber exists in the water phase.

Method used

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  • Sunscreen cosmetic
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Examples

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Embodiment

[0058] The present invention will be described in more detail by giving specific examples below, but the present invention is not limited by the following examples. In addition, unless otherwise specified, the compounding quantity in a following example etc. shows mass %.

[0059] An oil-in-water emulsion composition having a composition shown in Table 1 below was prepared. Specifically, the water phase component and the oil phase component were heated to 70° C. and completely dissolved, and then the oil phase was added to the water phase and emulsified with an emulsifier to obtain the compositions of the respective examples.

[0060] Sample 18.87 μL of each composition of Example 1, Example 2 and Comparative Example 1 was mixed with 0.75 mg / cm 2 A ratio of 100% was uniformly applied to the surface of a film (5cm×5cm) made of PMMA. After standing for 15 minutes, the absorbance of each sample was measured using a spectrophotometer (U-4100: manufactured by Hitachi, Ltd.). the...

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Abstract

Provided is a sunscreen cosmetic, which is capable of effective protection from not only UVB but also UVA, feels fresh and cool when used, and yet has excellent stability and can form a highly ultraviolet ray-protective film when applied. An oil-in-water sunscreen cosmetic characterized in comprising (a) an aqueous dispersion of an oil-soluble ultraviolet absorber, (b) one or more of crosslinking polyether-modified silicones or crosslinking alkyl polyether-modified silicones, (c) a low viscosity silicone oil, and (d) water. It is preferable that the aqueous dispersion of the oil-soluble ultraviolet absorber is an aqueous dispersion of composite particles of bisethylhexyloxyphenol methoxyphenyl triazine and an organic polymer. Additionally blending methylene bis-benzotriazolyl tetramethylbutylphenol is desirable.

Description

technical field [0001] The present invention relates to an oil-in-water emulsified composition, and more specifically, to an oil-in-water emulsified composition having an oil-soluble ultraviolet absorber blended in an external phase (aqueous phase) and having a stable and high ultraviolet protection ability. Background technique [0002] The purpose of sunscreen cosmetics is to block the ultraviolet rays in the sun's rays and protect the skin from the adverse effects of ultraviolet rays. As the base, emulsified type, lotion type, oil type, etc. can be mentioned. Among them, the oil-in-water type emulsified type can be formulated from low SPF (sun protection factor) to high SPF products because of its moist touch. And it is widely used (Non-Patent Document 1). [0003] On the other hand, the UV absorbers compounded in sunscreen cosmetics include oil-soluble UV absorbers and water-soluble UV absorbers, in order to absorb ultraviolet rays in the UVA region (wavelength 320-400n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/49A61K8/06A61K8/891A61K8/894A61Q17/04
CPCA61K8/891A61K8/062A61K2800/594A61Q17/04A61K8/4966A61K8/894A61K8/49A61K8/06
Inventor 山口和弘永礼由布子
Owner SHISEIDO CO LTD
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