JP2000063254A - Skin-protecting cream - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain skin-protecting cream excellent in water repellent property and durability in kitchen work. SOLUTION: This skin-protecting cream contains a volatile cyclic silicone oil (e.g. octamethylcyclotetrasiloxane or decamethylcyclopentasiloxane) which is a volatile oil or volatile isoparaffin (e.g. light liquid paraffin), a solid-like oil (e.g. natural wax), semi-solid-like oil (e.g. lanolin or vaseline) or a liquid oil (natural squalane) which are each a film-forming component, preferably further scaly powder (e.g. silicone hydrophobic tale powder or sericite) and an oil-soluble medicine (e.g. glycyrrhetic acid derivative or oil extract of Artemisiae capillaris flos) or a water-soluble medicine and does not contain water and a surface active agent (e.g. emulsifying agent). Thereby, when the skin-protecting cream is applied to the surface of skin of hands, etc., a film excellent in water repellent property, durability, resilience and flexibility and free from stickiness is formed after volatile oil is volatilized.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a skin protection cream,
Specifically, it has the same feeling of use as conventional creams, but does not contain the water and surfactants contained in conventional creams, and relates to a skin protection cream that is remarkably excellent in water repellency and durability during water work. Is.

[0002]

2. Description of the Related Art Generally, a cream is a product obtained by emulsifying components such as oil and wax with water using a surfactant (also called an emulsifier). For this reason, it is re-emulsified during water work (the oil film in the cream applied to the hand is emulsified and becomes a cream emulsion) and loses its durability. Silicon oil and petrolatum (also called vaseline) are added for the purpose of water repellency. However, there is a drawback in that the water-repellent effect is reduced due to the addition of a surfactant (emulsifier), and the preservative is always required due to the addition of water.

In order to solve the above-mentioned drawbacks, there is a product with 100% oil content such as baby oil and a hand cream made into petrolatum (petroleum jelly) with a pink color to make it cosmetic, but the strength of the oil film is small and it is washed away immediately. There is a drawback that the sticky property is maintained as it is even after application.

Although the use feeling of the hand cream can be improved to some extent by blending talc powder or spherical resin powder, the surface activity (oxidation-promoting catalytic action) of these powders causes generation of rancid odor, or spherical resin powder. There is a drawback that the powder gets into the fingerprint and is easy to drop when grasping an object, which is a temporary measure.

[0005]

As described above, the cream contains a surfactant because of the necessity of emulsification, and when the cream is used and the hands are washed with water, the surfactant becomes an oil phase. It acts as a re-emulsifier, reducing the durability and water repellency of the cream.

Even if the wax content of the cream is increased, when the cream is applied to the skin and the water vapor evaporates, the wax powder comes out like dust and dirt and can be applied continuously. It will be impossible. That is, it is possible to apply evenly to the surface of soft skin up to the semi-solid petrolatum form, which means that solid things such as beeswax and candles cannot be applied to the skin and powder. However, it is still consistent with the inability to apply.

The present invention solves the above-mentioned problems of the prior art, does not contain water and a surfactant contained in conventional creams, and has excellent water repellency and durability during water work. The purpose is to provide a protective cream.

[0008]

Means for Solving the Problems As a result of intensive studies for achieving the above-mentioned object, the present inventor has found that a film-forming component is dissolved in a specific volatile oil to form a cream, and thus the surface of the skin is repelled. The inventors have found that it is possible to form a film that is excellent in water-based property, durability, elasticity and flexibility and has no sticky feeling, and completed the present invention.

That is, the skin protection cream of the present invention (hereinafter simply referred to as "cream") comprises a volatile cyclic silicone oil and / or a volatile isoparaffin, a solid oil component as a film forming component, a semi-solid oil component and a liquid. It is characterized by containing oil and not containing water and a surfactant (emulsifier).

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Here, the volatile cyclic silicone oil and the volatile isoparaffin as volatile oils are mixed raw material standards and cosmetic raw material standards (hereinafter
It is called "Shogenji" ) Is used,
As the wax, use one that is specified in the cosmetic standards. The amount of volatile oil is usually 30-based on the total amount of cream.
It is 95% by weight, preferably 60 to 90% by weight, and the amount of the wax compounded is usually 5 to 40% by weight, preferably 5 to 25% by weight, based on the total amount of the cream.

As the volatile silicone oil, octamethylcyclotetrasiloxane or decamethylcyclopentasiloxane is preferably used alone or in combination.

As the volatile isoparaffin, the first fraction 1
It is preferable to use light liquid paraffin which does not contain a fraction of 60 ° C., a distillation fraction of 95% of 190 ° C., and a temperature of 200 ° C. or higher.

In the present invention, solid oil, semi-solid oil and liquid oil are used as the film-forming component.

As the solid oil, beeswax, tree wax, carnauba wax, candelilla wax, animal and vegetable oils,
Examples include cocoa butter, cetyl alcohol (1-hexadecanol), stearyl alcohol (1-octadecanol), stearic acid, and the like, and mineral-based ones such as solid paraffin, ceresin, and microcrystalline wax. It is preferable to use natural wax, especially beeswax is a natural beeswax that is purified without bleaching with sunlight or chemical treatment with an oxidizing agent or a reducing agent to remove a peculiar unpleasant odor and to be stable against oxidation. It is an excellent refined beeswax and is extremely effective as a protective film reinforcing component.

Examples of the semi-solid oil include lanolin and the like as animals and plants, and petroleum jelly and the like as minerals. It is preferable to use animals and plants.

As the liquid oil, animal and vegetable oils such as olive oil, camellia oil, cottonseed oil, castor oil, oleyl alcohol (9-octadecen-1-ol), oleic acid,
Squalane, etc., and liquid paraffin, silicone oil, etc. are mentioned as minerals, but it is particularly preferable to use natural oil, and especially squalane, for example, natural squalane derived from olive oil is effective for skin flexibility and elasticity. It is very excellent as a liquid oil because it keeps it and when it is applied to the skin, it spreads very easily and forms a protective film that improves skin respiration while suppressing dehydration.

In the cream of the present invention, in addition to the above-mentioned basic components, it is effective to add a scale-like powder as a component for suppressing stickiness. As the scale-like powder, talc powder hydrophobized with silicon is used. Alternatively, it is preferable to use sericite. The average particle size of the flaky powder to be used is usually 3 to 20 μ, preferably 5 to 15 μ, and if it is 5 μ or less, the oil phase viscosity increases and the stickiness preventive property decreases, and if it is 25 μ or more, a rough feeling at the time of use. Not so good. Further, the blending amount thereof is usually 5 to 20% by weight based on the total amount of the cream, and if it is 5% or less, the effect of preventing stickiness of the oil phase is insufficient, and if it is 20% or more, powdery sap powder does not appear. It is preferably 5 to 10% by weight.

In addition to the above components, it is preferable to add an effective amount of an oil-soluble drug or a water-soluble drug to the cream of the present invention. Particularly preferred oil-soluble agents are glycyrrhetinic acid derivatives such as stearyl glycyrrhetinate (stearyl glycyrrhetinate), which are said to be effective for inflammation and rashes after sunburn, and oil extract of ginkgo biloba (a type of wormwood). The oil-soluble drug can be directly added as it is, but the water-soluble drug needs to be microencapsulated or adsorbed to powder before being added.

In addition to the above-mentioned components, the cream of the present invention may optionally contain antiseptics (parabens, sorbic acid, isopropylmethylphenol, phenoxyethanol, etc.), flavors (lavender oil, etc.), thickeners (tribehen). Glyceryl acid, etc.), antioxidants (dibutylhydroxytoluene, natural vitamin E, etc.), UV absorbers (octylmethoxycinnamate, etc.), whitening agents (beeswax, talc, titanium dioxide, etc.), vitamins, amino acids, whitening An appropriate amount of agent or the like can be added.

[0020]

When the cream of the present invention is applied to the surface of the skin such as hands, the volatile oil evaporates and then the water repellency, durability, and
It forms a film with excellent elasticity and flexibility without stickiness.

[0021]

EXAMPLES The present invention will be described in more detail with reference to the following examples.

Example 1 A hand cream containing the following components in the following proportions (% by weight) was formulated.

Component Weight% Octamethylcyclotetrasiloxane (volatile oil 1) 50.0 Decamethylcyclopentasiloxane (volatile oil 2) 10.0 Bead wax (film forming agent 1) 20.0 Silicon oil (film forming Agent 2) 5.0 Squalane derived from olive oil (Film forming agent 3) 5.0 Hydrophobized talc powder * (scaly powder) 5.0 Glyceryl tribehenate (thickener) 5.0 Natural vitamin E (antioxidant Agent) Appropriate amount * No need to add. (Note) In order to improve the stability of the volatile oil 2 at 0 ° C, the film-forming agent 2 to improve water repellency and durability, and the film-forming agent 3 to improve the elasticity, flexibility and low temperature stability of the film. Blended into.

Example 2 A sand proof sun oil sunscreen cream containing the following components in the following proportions (% by weight) was formulated.

Ingredient Weight% Octamethylcyclotetrasiloxane (volatile oil 1) 50.0 Volatile isoparaffin (volatile oil 2) 15.0 Beeswax (film forming agent 1) 20.0 Silicon oil (film forming agent 2) 5.0 Hydrophobized talc (scaly powder) 5.0 Glyceryl tribehenate (thickener) 4.5 Natural vitamin E (antioxidant) Glycyrrhetinic acid (antipruritic) 0.1 Inchinko extract (astringent) ) 0.1 Ascorbic acid * (whitening agent) 0.1 Vitamin B6 * (beautiful skin / skin activating agent) 0.1 * Microencapsulated product.

The sand proof sun oil sunscreen cream according to the above formulation is less sticky than conventional olive oil and other non-volatile oil sun oil.
It had features such as no light and no sand.

[0027]

As described above, when the cream of the present invention is applied to the surface of the skin such as hands, the volatile oil evaporates, and the cream is excellent in water repellency, durability, elasticity and flexibility, and has a sticky feeling. It is very useful as a skin protection cream when working with water, because it can form a film that does not have.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yasuhiro Matsuda             1-23-20 Esakacho Suita City Osaka Prefecture Co., Ltd.             Inside Campehapio (72) Inventor Yutaka Mashita             Interna 88 Horiyamashita, Hadano City, Kanagawa Prefecture             Sional Toiletry Co., Ltd. (72) Inventor Nobuyuki Namba             6-28-6, Tanimachi, Chuo-ku, Osaka-shi, Osaka Prefecture             Tofu Inc. F term (reference) 4C076 AA17 AA23 BB31 CC18 CC23                       DD34A DD46G EE27A EE53A                       EE55A FF12 FF16 FF17                       FF22 FF51 FF56                 4C083 AA082 AA111 AA112 AB431                       AB432 AC021 AC022 AC422                       AD152 AD171 AD172 AD531                       AD532 AD632 AD642 AD662                       BB12 BB13 BB26 CC05 CC19                       DD14 DD28 DD31 EE06 EE07                       EE17

Claims (9)

[Claims] 1. A volatile cyclic silicone oil and / or a volatile isoparaffin, a solid oil component, a semi-solid oil component, and a liquid oil component, and does not contain water and a surfactant (emulsifier). Characterizing skin protection cream. 2. The skin protection cream according to claim 1, wherein the volatile cyclic silicone oil is octamethylcyclotetrasiloxane and / or decamethylcyclopentasiloxane. 3. A first distillate of volatile isoparaffin is 160 ° C.,
The skin protection cream according to claim 1, which is a light liquid paraffin that does not contain a 95% distilled fraction of 190 ° C and a fraction of 200 ° C or higher. 4. The skin protective cream according to claim 1, wherein the liquid oil is natural squalane. 5. A volatile cyclic silicone oil and / or a volatile isoparaffin, a solid oil component, a semi-solid oil component, a liquid oil component, and a scaly powder, and contains water and a surfactant (emulsifier). A skin protection cream characterized by containing no. 6. The skin protective cream according to claim 5, wherein the flaky powder is talc powder or sericite which has been subjected to a hydrophobic treatment with silicon. 7. A volatile cyclic silicone oil and / or a volatile isoparaffin, a solid oil component, a semi-solid oil component, a liquid oil component, a scaly powder, and an oil-soluble or water-soluble drug, And water and surfactant (emulsifier)
A skin protection cream characterized by containing no. 8. The skin protective cream according to claim 7, wherein the oil-soluble drug is an oil extract of glycyrrhetinic acid derivative and / or inchinko. 9. The skin protective cream according to claim 7, wherein the water-soluble drug is microencapsulated or adsorbed to a powder to be blended.