JPH0525031A - Multilayer-type face lotion - Google Patents

Abstract

PURPOSE:To obtain a multilayer-type cosmetic containing pigments selectively and exclusively dyed to reddish purple to bluish purple color and having excellent heat-resistance and light-resistance by compounding a gold hydrosol obtained by dispersing gold in water in the form of ultrafine particles. CONSTITUTION:The objective multilayer face lotion is produced by compounding a gold hydrosol (dispersion of ultrafine gold particles in water having a concentration of preferably 0.001-0.1wt.%) produced by using an aqueous solution of a gold salt such as chloroauric acid as a raw material and treating the solution with a water-soluble reducing agent such as sodium borohydride, sodium citrate and ascorbic acid salt. The pigment to be selectively dyed in the multilayer face lotion is zinc oxide, cerium oxide, tale, mica, kaolin, nylon powder, silica, alumina, etc. Examples of the multilayer face lotion are calamine lotion to prevent the burning sensation after sunburn, face lotion for greasy skin, liquid face lotion, essence, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-layer lotion having excellent heat resistance and light resistance.

[0002]

2. Description of the Related Art Conventionally, it has been conventional to incorporate an inorganic pigment such as zinc oxide, aluminum silicate, titanium oxide or talc into a lotion for the purpose of anti-inflammatory, astringent and skin-conditioning action. Has been done. Furthermore, in order to make the cosmetics look beautiful, there is provided a multi-layered lotion in which an inorganic pigment portion is mixed with a colored pigment such as iron oxide or an aluminum lake of a tar dye. However, when a colored pigment is mixed, there arises a problem that long-term storage stability and heat history are deteriorated due to differences in specific gravity and electrification, and the pigment becomes nonuniform due to sunlight.

On the other hand, it has long been known that when gold fine particles are adsorbed on the solid surface, the surface is colored reddish purple, and this has been variously used for coloring glass and ceramics. Further, Japanese Patent Application Laid-Open No. 1-215865 discloses a cosmetic containing a purple pigment having a carrier surface coated with gold, and Japanese Patent Application Laid-Open No. 2-104512 discloses a cosmetic containing an ultrafine gold particle-immobilized oxide. ing. However, these are all treated in the same way as red inorganic pigments, and when this is applied to a multi-layered lotion,
There is a problem in that the non-uniformity is caused due to the difference in the difference in specific gravity from the extender pigment.

Therefore, an object of the present invention is to provide a multi-layer lotion having excellent heat resistance and light resistance in which only the pigment portion is selectively dyed from red purple to blue purple.

[0005]

The multi-layered lotion of the present invention which achieves the above object is characterized by containing gold hydrosol, and only the pigment portion is selectively dyed from red purple to blue purple, A multi-layer lotion with excellent heat resistance and light resistance.

The gold hydrosol used in the present invention is a liquid in which gold is dispersed in water in an ultrafine particle state. An aqueous solution of a gold salt such as chloroauric acid is used as a raw material and sodium borohydride,
It can be obtained by a known method of treating with a water-soluble reducing agent such as sodium citrate or ascorbate. Further, the concentration of the fine gold particles in the gold hydrosol in the present invention is 0.001 to
The range of 0.1% by weight is preferable, and when it is less than 0.001% by weight or more than 0.1% by weight, a stable gold hydrosol having a beautiful color tone cannot be obtained.

The amount of the gold hydrosol compounded in the lotion according to the present invention may be appropriately selected depending on the desired color tone, the amount of pigment to be used, and the properties, and is not particularly limited. Further, as the pigment selectively dyed in the multi-layered lotion of the present invention, zinc oxide, cerium oxide, titanium oxide, talc, mica,
Sericite, kaolin, mica titanium, calcium carbonate,
Magnesium carbonate, aluminum silicate, magnesium silicate, nylon powder, silk powder, urethane powder, cellulose powder, silica, alumina, gypsum,
Glass beads and the like can be mentioned, and one kind or a mixture of two or more kinds thereof is used.

The multi-layered lotion of the present invention contains a moisturizer, water-soluble polymer, surfactant, water, oil, wax, fragrance, colorant, preservative, antioxidant, bactericide, amino acid,
Ingredients usually used in cosmetics such as vitamins, hormones, and ultraviolet absorbers can be appropriately added.

And, as the multi-layered lotion of the present invention,
Examples include calamine lotion for preventing hot flashes after sunburn, lotion for oily skin, white powder, essence and the like.

[0010]

EXAMPLES The present invention will be described in detail below with reference to examples. As an evaluation test, a light resistance test and a heat resistance test were conducted as follows.

(1) Light resistance test A sample is placed in a transparent container and exposed to sunlight for 30 days.
Compare this with the same sample stored in a cool and dark place, and ○ when there is no change in the uniformity of color and pigment part, × when there is a change
And

(2) Heat resistance test A sample was stored at 45 ° C. for 3 months and compared with the same sample stored in a cool and dark place. When there was no change in the uniformity of color and pigment part, ○, there was a change. In some cases, it was marked as x.

Production Example 1 of Gold Colloid 824 mg of chloroauric acid is dissolved in 100 ml of quasi water. Pure water (925 ml) is added to this chloroauric acid aqueous solution (25 ml), and under stirring, sodium borohydride (75.7 mg / 50 ml) aqueous solution (50 ml) is injected, and the mixture is stirred for 10 minutes and allowed to stand to obtain a gold hydrosol.

Example 1 A two-layer lotion of the present invention having the following composition was obtained. (Composition) (%) 1. Ethyl alcohol 15.0 2. Glycerin 3.0 3. Aluminum chlorhydroxide 0.1 4. Synthetic aluminum silicate 0.3 5. Gold hydrosol of Production Example 2.0 6. Purified water 79.6

(Production method) 1 to 3 and 5 were uniformly mixed and stirred, then 4 was uniformly mixed and dispersed, and 4 was further added and stirred to obtain a two-layer type lotion of the present invention. The characteristics are shown in Table 1. As is clear from Table 1, the two-layer lotion of the present invention had high stability with no change in color tone in the light resistance test and the heat resistance test.

Production Example 2 of Gold Hydrosol A gold hydrosol was obtained in the same manner as in Production Example 1 except that sodium borohydride was replaced with sodium citrate.

Example 2 A two-layer lotion of the present invention having the following composition was obtained. (Composition) (%) 1. Ethyl alcohol 4.0 2. Methyl paraoxybenzoate 0.1 3. Glycerin 5.0 4. Sodium hexametaphosphate 0.05 5. Zinc sulfosekitanate 1.0 6. Zinc white 1.0 7. Talc 1.0 8. Kaolin 1.5 9. Anhydrous sodium carbonate 0.2 10. Gold hydrosol of Production Example 5.0 11. Purified water 81.15

(Production method) 1 to 5 and 11 were uniformly mixed and stirred, and then 6 to 8 were mixed and dispersed, and 9 and 10 were sequentially added to obtain a two-layer type lotion of the present invention. The characteristics are shown in Table 1. As is clear from Table 1, the two-layer type lotion of the present invention was highly stable with no change in color tone in the light resistance test and heat resistance test.

Example 3 A three-layer type lotion of the present invention having the following composition was obtained. (Composition) (%) 1. Liquid paraffin 2.0 2. Ethyl alcohol 5.0 3. Methyl paraoxybenzoate 0.1 4. Dipropylene glycol 8.0 5. Sodium citrate 0.05 6. Citric acid 0.05 7. Titanium oxide 1.0 8. Mica 0.5 9. Gold hydrosol of Production Example 5.0 10. Purified water 76.3

(Production Method) 2 to 6 and 10 were mixed and dissolved uniformly, 7 and 8 were dispersed, 9 was added to dye the pigment portion, and 1 was added to obtain the three-layer lotion of the present invention. Obtained. The characteristics are shown in Table 1. As is clear from Table 1, the three-layer type lotion of the present invention had high stability with no change in color tone in the light resistance test and the heat resistance test.

Comparative Example 1 A two-layer lotion having the following composition was obtained. (Composition) (%) 1. Ethyl alcohol 4.0 2. Methyl paraoxybenzoate 0.1 3. Glycerin 5.0 4. Sodium hexametaphosphate 0.05 5. Zinc sulfosekitanate 1.0 6. Zinc white 1.0 7. Talc 1.0 8. Kaolin 1.5 9. Red iron oxide 0.05 10. Anhydrous sodium carbonate 0.2 11. Purified water 86.1

(Manufacturing method) 1 to 5 and 11 are uniformly mixed and stirred, then 6 to 9 are mixed and dispersed, and 10 is further added to obtain 2
A layered lotion was obtained. The characteristics are shown in Table 1. As is clear from Table 1, in the two-layer type lotion of this comparative example, red iron oxide became non-uniform in the light resistance test and the heat resistance test,
It has settled.

[0023]

[Table 1]

[0024]

As described above, when the multi-layered lotion of the present invention is mixed with gold hydrosol, only the pigment portion is selectively dyed from red purple to blue purple, and the heat resistance and light resistance are extremely high. It is excellent.

Claims (1)

Claims: 1. A multilayer lotion containing gold hydrosol.