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Water-in-oil type emulsified cosmetic and skin care method

An emulsified cosmetic, water-in-oil type technology, applied in the direction of cosmetics, cosmetic preparations, cosmetic preparations, etc., can solve the problems of inability to obtain water resistance, poor durability, external stimulation, etc., and achieve excellent extension, stable emulsification, and film. Residual feeling suppression effect

Active Publication Date: 2013-05-29
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since water-soluble polymers are contained, sufficient waterproofness cannot be obtained, and the durability is poor. Therefore, the cosmetics are not effective against external stimuli, especially stimuli other than the sun's ultraviolet rays.

Method used

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  • Water-in-oil type emulsified cosmetic and skin care method
  • Water-in-oil type emulsified cosmetic and skin care method
  • Water-in-oil type emulsified cosmetic and skin care method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and comparative example 1～8

[0092] [Manufacturing method]

[0093] In Tables 1, 3, and 4, components (A) to (D) are used as phase I (oil phase) components, and component (E) is used as phase II (water phase) components. The ingredients of the first phase are mixed uniformly by the propeller stirring (500rpm) at room temperature according to the amount shown in Table 1, and the second phase II formed by dissolving and mixing is slowly added under stirring to emulsify, and the oil-in-oil mixture of the present invention is prepared. Water-based emulsified cosmetics 300g. In Table 2, after mixing in the same manner as in Tables 1, 3, and 4, they were treated with a homomixer at a rotation speed of 4,000 to 10,000 rpm for 10 minutes to prepare 300 g of the water-in-oil emulsified cosmetic of the present invention.

[0094] Evaluation methods and standards

[0095] Based on the following methods and standards, the water-in-oil emulsified cosmetics were evaluated for their barrier effect against external st...

Embodiment 2～8

[0165] Evaluation methods and standards

[0166] Based on the following methods and standards, the water-phase separation and time-dependent viscosity change rate of the prepared water-in-oil emulsified cosmetic were calculated.

[0167] (4) Water phase separation after shearing caused by stirring

[0168] The sample is stirred with a propeller / homomixer to prepare a sample. The state of the sample after preparation was visually observed and evaluated according to the following criteria.

[0169] evaluation standard

[0170] ○: No separation

[0171] ×: separation

[0172] (5) Time-dependent viscosity change rate after modulation

[0173] The sample immediately after preparation was put into a glass bottle (9.5 cm in height, 4.5 cm in inner diameter), and the viscosity was measured at a speed of 6 rpm with a B-type viscometer (BM type or TV-10 type manufactured by Toki Sangyo Co., Ltd.). After the sample was stored at room temperature for one month, the viscosity was me...

Embodiment 9～11 and comparative example 9～11

[0181] test methods

[0182] Based on the following method, the SPF value of the water-in-oil emulsified cosmetic was measured.

[0183] Each sample was treated with 2mg / cm 2 Spread evenly on a surgical tape on a quartz glass plate, let it dry for more than 20 minutes, and then measure the SPF value of the cosmetics with an SPF analyzer (Optometrics).

[0184] table 3

[0185]

[0186] Silicone treated titanium oxide * 9: SI-Titanium CR-50 (Titanium oxide treated with methylhydrogenpolysiloxane Miyoshi Chemical Co., Ltd.)

[0187] Silicone treated zinc oxide * 10: MZ-504 (methyl hydrogen polysiloxane treated zinc oxide TAYCA Co., Ltd.)

[0188] It is evident from the results in Table 3 that the water-in-oil emulsified cosmetic of the present invention can form an excellent film and obtain a more excellent ultraviolet protection effect.

[0189] Examples 12-30

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PUM

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Abstract

The invention provides a water-in-oil type emulsified cosmetic which is excellent in stability, isolation effect and skin feeling. The water-in-oil type emulsified cosmetic is prepared by comprising the following components: (A) 0.5-10wt% of a silicone elastomer, (B) 0.2-10wt% of dimethyl polysiloxane with the polymerization degree of more than 350 and less than 1500, (C) 3-28wt% of dimethyl polysiloxane and / or decamethyl cyclopentasiloxane with the polymerization degree of more than 1 and less than 6, (D) 0.5-25wt% of ethanol and (E) water. Furthermore, the invention also provides a skin care method which applies the water-in-oil type emulsified cosmetic provided by the invention to the skin and maintains the skin.

Description

technical field [0001] The invention relates to a water-in-oil emulsified cosmetic and a skin care method. Background technique [0002] In people's daily life, external stimuli such as ultraviolet rays from the sun, exhaust from automobiles, air pollution from factories, smoking by surrounding people, and make-up often cause continuous damage to the skin. In the present invention, the effect of protecting the skin from these external stimuli is defined as the barrier effect. [0003] So far, research has been conducted on cosmetics that protect the skin from the sun's ultraviolet rays, exhaust gas from automobiles, dust from factories, etc., and smoke from cigarettes. Among them, studies have been made on cosmetics that suppress the adhesion and permeation of irritating substances by forming a film on the skin surface (Patent Documents 1 to 4). [0004] In Patent Document 1, a high internal water phase water-in-oil emulsified cosmetic that combines a silicone elastomer an...

Claims

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Application Information

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IPC IPC(8): A61K8/891A61K8/06A61Q19/00A61Q17/04A61Q17/00
Inventor 织田政纪黄靓
Owner KAO CORP
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