JPS58177910A - Three-layered type liquid skin cosmetic - Google Patents

Abstract

PURPOSE:A cosmetic, containing a nonionic surfactant except polyoxyethylene adducts, a liquid oil, hydrous silicon oxide, water-soluble salt and water, capable of dividing into three layers on allowing to stand, and uniformly dispersing in shaking for use. CONSTITUTION:The titled cosmetic containing 0.1-1wt% nonionic surfactant except polyoxyethylene adducts, e.g. sorbitan ester or sorbitol ester of a fatty acid, polyglycerol ester of a fatty acid, or sugar ester of a fatty acid, and having 5-12HLB, liquid oil, e.g. liquid paraffin, 2-5wt% hydrous silicon oxide, 0.2- 1wt% water-soluble salt, e.g. CaCl2, and water. The cosmetic assumes three layers of the upper oily layer, intermediate aqueous layer and bottom powdery layer, and is integrally mixed in shaking for use to give an astringent feeling of good touch to the skin.

Description

[Detailed Description of the Invention] The present invention is divided into three layers when left on a table when not in use, and when shaken during use, these three layers are mixed and form a uniformly dispersed emulsion, which allows the user to The present invention relates to a three-layer lotion that has an extremely good feel for the skin.

The three layers consist of an oil layer as an upper layer, a water layer as an intermediate layer, and a powder layer as a lower layer, and when left still, they appear clearly separated.

Traditionally, lotion consists of two layers: an oil layer and a water layer.
There are liquid-liquid types and liquid-same types such as calamine lotion, which consist of a water layer and a powder layer. but,
In terms of usability, the oil-water layer type is moist but sticky, and the water-powder layer type has some disadvantages, such as being sticky. There has been a desire to develop a three-layer lotion consisting of a layer and a powder layer, but if the two types of ingredients listed above are simply combined, the powder layer will adsorb the oil layer and the three-layer lotion will not be formed. .Also published in Japanese Unexamined Patent Publication No. 56-9
5109, it is stated that a three-layer type can be obtained by using polyoxyethylene alkyl phenyl ether as a surfactant, but when the present invention was further tested, a three-layer type with a beautiful appearance could not be obtained. In other words, the powder layer adsorbs the oil layer, and when shaken, it is mixed together, emulsified, and dispersed, giving the skin a pleasant astringent feeling (light, moisturizing, cooling, etc.), and making good makeup. The purpose is to provide an effective three-layer lotion.

That is, the present invention excludes polyoxyethylene adducts,
The composition of desired-on type surfactant, liquid oil, and hydrous oxidation will be described.

The surfactants other than polyoxyethylene adducts used in the present invention include sorbitan fatty acid esters, sorbitol fatty acid esters, polyglycerin fatty acid esters, sugar fatty acid esters, etc. having an HLB of 5 to 2, and having the general formula 0 sorbitol fatty acid esters. 0 Polyglycerin fatty acid ester 0 Sugar fatty acid ester A compound represented by M M , which is used singly or in combination of two or more thereof. The amount used is 0.05 to 3% by weight, preferably α1 to 1% by weight, based on the weight of the composition. If it is less than 0.005% by weight, the oil layer (oil content) cannot be uniformly dispersed and emulsified in the water layer. If it exceeds 3% by weight, it will take a long time to separate the oil and water layers after shaking and standing, and the interface between the oil and water layers will become cloudy, resulting in a poor appearance.

The amount of the hydrated silicon oxide powder used in the present invention is 1 to 8% by weight, preferably 2% by weight based on the weight of the composition.
~5% by weight. When the amount is less than 1% by weight, the bulk of the powder layer becomes small and the three-layered layer does not look beautiful in appearance.

If the amount is more than 8% by weight, it will spread hard and have a powdery finish, making your skin feel dry.

The water-soluble salts used in the present invention include salts that are easily soluble in water, have the effect of salting out oil emulsions when made into an aqueous solution, and can also cause soft agglomeration of powder. For example, sodium brine, calcium chloride/magnesium chloride, aluminum chloride, magnesium sulfate, alum, etc. may be used. Among water-soluble salts, water-based salts such as potassium dihydrogen phosphate, potassium dihydrogen phosphate, and sodium dihydrogen phosphate cannot be used because they do not cause soft aggregation. The amount of water-soluble salts to be blended is α1 to 2% by weight, preferably 0.2 to 1% by weight based on the weight of the composition.
It is.

When α is less than 1% by weight, turbidity occurs at the interface between the oil layer and the water layer, resulting in an unsightly appearance, and the redispersibility of the powder layer during shaking tends to deteriorate. When the amount exceeds 2% by weight, it becomes difficult to uniformly disperse and emulsify the three layers during shaking, and separation may occur too quickly after standing. Any liquid oil may be used as long as it is used as a cosmetic, such as liquid paraffin, squalane, and ester oil. The amount of acid to be added may be as long as it provides a beautiful appearance.

Naturally, the three-layer lotion according to the present invention contains moisturizing agents (e.g., polyethylene glycol, 1,3-butylene glycol, dipropylene glycol, etc.) commonly used in lotions, ethanol, fragrance preservatives, and dyes. etc. can be added within the range that does not impair the function of the three-layer lotion.

(Leaving space below) Example 1 (Three-layer astringent lotion) (1) Prescription black Ingredients ■ Liquid paraffin &0 ■ Sorbitan monolaurate α5 ■ Green No. 202 Appropriate amount ■ Ethyl alcohol 15.0 ■ Propylene glyfur 3.0 ■ Methylparaben 0.1 ■ Calcium chloride α2 ■ Hydrous silicon oxide 3.0 ■ Water 7α2
(2) Manufacturing method Add ■■ to ■■ of the above ingredients and dissolve with stirring (oil phase) Add ■■0 to a part of 0 and dissolve with stirring (water phase) Add ■■ to the remainder of ■ and disperse with stirring After that, add ■ and stir to dissolve (powder part). Next, the powder, wood, and oil phase were sequentially added to the aqueous phase and mixed uniformly to obtain a three-layer astringent lotion of the present invention.

When left standing, this lotion has a beautiful appearance with three distinct layers: a transparent pale blue oil layer (top layer), a colorless transparent water layer (middle layer), and a white powder layer (bottom layer). It showed.

When the 4 products that have been left to stand and are separated into three layers are shaken lightly, the oil and water layers will easily emulsify, and the powder will be evenly dispersed.
The three layers were mixed together.

When the mixture was allowed to stand again, the oil layer separated in about 10 minutes, and the powder layer gradually settled and reached a constant height the next day, returning to three layers. The interfaces of the oil layer, water layer, and powder layer in the restored three-layer structure are clearly separated.

This lotion does not have a sticky feeling when used, has a good moisturizing feeling, a refreshing feeling, and a light feeling, and has the two-layer water layer.
Oxyethylene sorbicune monoole < ) (6EO) was found to provide a good feel that covered the drawbacks of the powder layer system and the water-oil layer system.
Production was carried out in the same manner as in Example 1 using the same formulation as in Example 1, except that α5 parts of l: were used. The resulting lotion was not clearly separated into three layers because the oil layer was mixed into the powder layer and the oil layer disappeared.

Comparative Example 2 A product was manufactured in the same manner as in Example 1 using the same formulation as in Example 1 except that 3.0 parts of zinc oxide was used instead of hydrated heavy silicon. The resulting lotion did not clearly separate into five layers because the oil layer was mixed into the powder layer and the oil layer disappeared.

(Left below) Example 2 (Three-layered soft lotion) (1) Prescription height Ingredients ■ Isopropyl myristate 5 ■
Trigly7rin monooleate 1■
Green No. 202 Appropriate amount■ Ethyl alcohol 5■ 1,3
Butylene glycol Methylparaben However, Sodium chloride Hydrous silicon oxide 3[F] water
754 A three-layer softening lotion was obtained using the above formulation in the same manner as in Example 1.

(Hereinafter, blank spaces) Examples 3 to 7 Three-layer liquid cosmetics were prepared in the same manner as in Example 1. All of these cosmetics clearly separate into three layers when left still, and are evenly dispersed and mixed when shaken. Length, 4tl
#? t&151:hJ=.

Comparative Examples 3 to 8 Comparative examples were prepared by combining the respective formulations in the same manner as in Comparative Example 1. The resulting lotion had an oil layer mixed into the powder layer and no oil layer, and could not be clearly separated into three layers. There was also a feeling of haze, stickiness, and stiffness after use.

(Margin below) #I1 Table j111 Table (Note 1) Pour a fixed amount of the sample composition into a 100-colorimeter tube, shake vigorously up and down manually to mix uniformly, and then let stand. The next day, it was observed whether it had a beautiful appearance (three layers) and then evaluated.

○ mark: The next day it was clearly separated into three layers 〇 × mark: 〃
Do not separate.

(Note 2): Evaluation was made by manually shaking in the same manner as in (Note 1) and observing uniform miscibility at that time.

O mark: Mix evenly after shaking.

X mark: Not miscible.

(Note 3) A panel of 10 experts evaluated the lightness, moistness, coolness, etc., using sensory evaluation.

O mark: No sticky feeling when using, good moist feeling.
It has a refreshing and light feeling.

△ mark: Slightly sticky or stiff feeling when used.

Patent applicant: Shiseido Co., Ltd.

Claims (2)

[Claims] (1) The main ingredients are nonionic surfactants excluding polyoxyethylene adducts, liquid oil, and hydrated silicon oxide (
A three-layer lotion containing 5io2・n H2O), water-soluble salts, and water. (2) Claims in which the nonionic surfactant excluding polyoxyethylene adducts is at least one of the following: nrubitan fatty acid ester, sorbitol fatty acid ester/polyglycerin fatty acid ester, sugar fatty acid ester, and an HLB of 5 to 10. The three-layer lotion described in item (1). (Margin below)