JPH0632722A - External preparation for skin - Google Patents

Abstract

PURPOSE:To obtain an external preparation for skin showing effects of vitamin A and suppressing greasiness due to vitamin A. CONSTITUTION:This external preparation for skin comprises vitamin A and one or more kinds of powders. For example, organic powder such as nylon powder, polyethylene powder, cellulose powder or acrylic resin powder, mica, sericite, talc, kaolin, calcium carbonate, magnesium carbonate, zinc flower, titanium dioxide, red iron oxide, yellow iron oxide, ground limestone, inorganic pigment such as calamine, sintered pigment, organic pigment or powdery products obtained by properly treating the surfaces of these powders may be cited as the powder used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an external preparation for skin in which stickiness due to vitamin A is suppressed and its effect is remarkably improved.

[0002]

2. Description of the Related Art Vitamin A is known to be an effective component for the prevention and treatment of cutaneous keratoses and the like, and the prevention and restoration of skin aging.

However, contrary to these effects, vitamin A has a sticky feeling on use, which makes it difficult to mix it with a skin external preparation.

[0004]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention As a result of intensive studies in view of such circumstances, the present inventors have found that if one or more powders are mixed with vitamin A, the usability of vitamin A is significantly improved. The present invention has been completed.

[0005]

[Means for Solving the Problems] That is, the present invention is an external preparation for skin, which comprises vitamin A and one or more powders.

The structure of the present invention will be described in detail below.

Vitamin A used in the present invention is also called retinol, which is an all-trans type, 13-cis.
Molds are preferred and mixtures thereof are also acceptable.

There is no particular limitation on the amount to be added to the external preparation for skin according to the present invention, but 0.0001% by weight to 5.0% by weight is preferable considering the effect of vitamin A on the skin, and 001% to 0.5% by weight is particularly preferred.

Examples of the powder used in the present invention include nylon powder, polyethylene powder, cellulose powder, organic powder such as acrylic resin, mica, sericite,
Talc, Kaolin, Calcium carbonate, Magnesium carbonate, Zinc white, Titanium dioxide, Red iron oxide, Yellow iron oxide, Black iron oxide, Ultramarine blue, Titanium coated mica, Bismuth oxychloride, Red iron oxide, Caking pigment, Gunjo pink, Water Chromium oxide, mica titanium, yellow iron oxide, chromium oxide, aluminum cobalt oxide, navy blue, black iron oxide, carbon black, magnesium silicate, mica, zirconium oxide,
Inorganic pigments such as magnesium oxide, zinc oxide, titanium oxide, light calcium carbonate, heavy calcium carbonate, light magnesium carbonate, light magnesium carbonate, calamine, etc., sintered pigments, organic pigments, those powders which have been appropriately surface-treated, etc. Is mentioned.

The amount of the powder used in the present invention is not particularly limited and is preferably 0.01 or more.

The external preparation for skin of the present invention may have any dosage form, for example, powder, powder-based press,
Examples thereof include a powder-oil-based plate shape, a stick shape, a powder-water dispersion system, and an emulsion system. It also has a wide range of uses, including lipsticks, foundations, mascaras, eye shadows, eyeliners, makeup bases, eyebrows, and calamine lotions.

In addition to the above-mentioned essential ingredients, the external preparation for skin of the present invention contains other ingredients usually used in cosmetics and quasi drugs, such as moisturizers, surfactants, preservatives, water, alcohols, thickeners, Oils, drugs, chelating agents, fragrances, coloring agents, ultraviolet absorbers and the like can be added as required.

[0013]

The external preparation for skin of the present invention contains vitamin A to prevent or treat keratosis dermatitis and to prevent skin aging.
Despite being excellent in recovery, it is an excellent external preparation for skin without the stickiness peculiar to vitamin A, and with good stability and safety.

[0014]

EXAMPLES The present invention will now be described in more detail by way of examples, which should not be construed as limiting the invention.
The blending amount is% by weight.

Example 1 Cosmetic oil Olive oil 50.0 Isopropyl myristate 20.0 Squalane 20.0 Vitamin A 5.0 Powder 5.0

Comparative Example 1 Comparative Example 1 was obtained in the same manner as in Example 1 except that the powder was removed from Example 1.

The usability (stickiness) of Example 1 and Comparative Example 1 was judged and evaluated by a practical use test of a panel specialized in female beauty. (Judgment Criteria) A: Not sticky. B: Slightly sticky, but within a range that causes no problem in use C: Sticky. D: Remarkably sticky. The results are shown in Table 1.

[0018]

[Table 1] From this result, it is clear that the powder prevents vitamin A stickiness.

Example 2 Foundation (Oil Phase) Stearyl alcohol 3.0 Stearic acid 2.0 Squalane 5.0 POE (25) cetyl ether 1.0 Glyceryl monostearate 1.0 Ethylparaben 0.2 Vitamin A 0. 5 (Powder Phase) Titanium Dioxide 3.0 Talc 3.0 Kaolin 1.4 Iron Oxide 2.6 (Aqueous Phase) Propylene Glycol 3.0 Triethanolamine 1.0 Purified Water Residual-Process-The oil phase is heated and stirred. , Disperse the powder phase. This was also added to the aqueous phase which was heated and stirred and dissolved, and the mixture was cooled by emulsification and stirring to obtain a foundation.

Example 3 Compact Foundation Methylphenyl polysiloxane (polymerization degree 250) 15.0 Liquid paraffin 3.0 Isopropyl myristate 2.0 Stearic acid 1.0 Ethylparaben 0.5 Vitamin A 1.0 Formulated powder * 77 .5 * Formulated powder; a powder composed of titanium oxide 7.0, talc 52.2, kaolin 15.0, and iron oxide 4.8. -Manufacturing method-A compact foundation was obtained by a conventional method.

Example 4 Foundation Lotion (Oil Phase) Stearic Acid 2.0 Cetanol 0.3 Liquid Paraffin 5.0 Butyl Paraben 0.05 POE (10) Olate 1.0 Sorbitan Trioleate 1.0 Vitamin A 10.0 (Powder phase) Formulated powder * 10.5 (Aqueous phase) Ethanol 5.0 Propylene glycol 5.0 Triethanolamine 1.0 Carboxymethyl cellulose 0.3 Hibitene digluconate 0.05 Purified water Residue * Formulated powder; Titanium oxide A powder consisting of 6.0, talc 6.2, kaolin 3.0, and iron oxide red 1.5. -Manufacturing method-According to Example 2.

Example 5 Oily foundation Vitamin A 0.1 Formulated powder * 43.0 Microcrystalline wax 10.0 Sorbitan sesquioleate 1.0 Propylparaben 0.5 Liquid paraffin Residue * Formulated powder; Titanium oxide 15.0, Kaolin 25.0,
Powder consisting of iron oxide 2.0. -Manufacturing method-Prepared powder, components other than vitamin A are heated and stirred to dissolve,
In addition to the prepared powder and vitamin A, mix uniformly while maintaining the whole temperature. The medium plate was filled and cooled to obtain an oily foundation.

Example 6 Eye Shadow Formulated Powder * 92.1 Beeswax 2.0 Hexadecyl Palmitate 5.0 Glyceryl Monostearate 0.5 Vitamin A 0.2 Perfume 0.3 * Formulated Powder; Titanium Oxide 5.0 , Kaolin 45.5, iron oxide red 6.0, iron oxide 20.0. -Manufacturing method-According to Example 2.

Example 7 Calamine Lotion Zinc white 1.3 Sericite 3.0 Iron oxide 0.05 Glycerin 2.0 Camphor 0.2 Ethanol 10.0 POE (60) hydrogenated castor oil 0.6 Vitamin A 0.001 Purified water Residue-Production method-All components were mixed well and stirred to give a calamine lotion.

Example 8 Base cream Propylene glycol 5.0 Causticari 0.2 Glycerin 3.0 Talc 1.0 Kaolin 2.0 Iron oxide 0.1 Liquid paraffin 10.0 Vaseline 5.0 Stearic acid 2.0 Cetyl alcohol 2.0 Lanolin 2.0 Stearic acid monoglyceride 2.0 Ethyl paraben 0.3 Fragrance 0.2 Isopropyl myristate 0.5 Vitamin A 1.0 Purified water Residue-Production method-A base cream was obtained by a conventional method.

Example 9 Night cream Liquid paraffin 18.0 Vaseline 7.0 Isopropyl myristate 5.0 Polyethylene powder 4.0 Butylparaben 0.2 Vitamin A 0.1 Diglycerin monooleate 2.0 Diglycerin triiso Stearate 2.0 Glycerin 7.0 Cellulose powder 3.0 Yellow iron oxide 0.05 Purified water Residue-Production method-A night cream was obtained by a conventional method. Examples 2 to 9 were external preparations for the skin, which were excellent in the prevention and treatment of keratoderma keratosis and the like, the prevention and recovery of skin aging, and were free of bulkiness.

Claims (1)

[Claims] 1. An external preparation for skin, comprising vitamin A and one or more powders.