JPH115717A - Cosmetic for body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a cosmetic for a body giving a refreshing feeling, and smooth feeling, inconspicuous whiteness of the powder having suitable viscosity, excellent in usability, hardly causing caking of the powder in the passage of time and very good in stability. SOLUTION: This cosmetic for a body comprises 25-60 wt.% ethanol, 10-40 wt.% starch powder and/or anhydrous silicic acid having >=1 μm average primary particle diameter, 1-5 wt.% anhydrous silicic acid having <1 μm average primary particle diameter, 0.5-3 wt.% liquid nonionic surfactant having >=12 HLB at a normal temperature and 10-40 wt.% liquid oil at the normal temperature, and substantially includes no water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic for a body, and more particularly, it has a refreshing feeling and a dry feeling when applied to the skin, the whiteness of the powder is not conspicuous, and the powder has an appropriate viscosity. The present invention relates to a cosmetic for a body which is excellent in stability and free of powder caking over time and has good stability.

[0002]

2. Description of the Related Art Heretofore, powders of a body powder mixed with talc having a smooth feel and starch having a hygroscopic property have been used. Also, in recent years, including starch powder and volatile cyclomethicone,
And talc-free aqueous liquid powder (Tokuheihei 8-
No. 505845), a powdered body lotion containing a lower alcohol and a porous and / or water-absorbing powder (Japanese Patent Application Laid-Open No. 9-48721), and further a liquid oil component (Japanese Patent Application Laid-Open No. 9-48722). Etc. have been proposed.

[0003]

However, the above-mentioned powdery body lotion has a problem in usability due to the low viscosity of the product system, which causes dripping when applied on the skin. In addition, during long-term storage, the powder is agglomerated and solidified (caking), resulting in poor re-dispersibility, which has a problem in stability. Therefore, when applied to the skin, there is a refreshing feeling and a dry feeling, the whiteness of the powder is not conspicuous, and it has an appropriate viscosity and excellent usability, and there is no caking of the powder over time, and the stability is low. The development of a good body cosmetic has been desired.

[0004]

Under these circumstances, the present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, have found that a specific amount of ethanol, starch powder and / or anhydrous having an average primary particle diameter of 1 μm or more. It contains silicic acid, silicic acid anhydride having an average primary particle diameter of less than 0.1 μm, nonionic surfactant having an HLB liquid at room temperature of 12 or more, and an oily agent which is liquid at room temperature and is substantially free of water. Due to this, when applied to the skin, there is a refreshing feeling and a dry feeling, the whiteness of the powder is inconspicuous, and it has a moderate viscosity and excellent usability, and there is no caking of the powder over time, and the stability is stable. Finding that very good body cosmetics can be obtained,
The present invention has been completed.

That is, the present invention provides the following components (A) to
(E); (A) 25 to 60% by weight of ethanol (B) Starch powder and / or average primary particle diameter is 1 μm
The above silicic acid 10 to 40% by weight (C) Silicic anhydride having an average primary particle diameter of less than 0.1 μm
(D) 0.5 to 3% by weight of a nonionic surfactant having an HLB liquid at room temperature of 12 or more (E) 10 to 40% by weight of an oily agent liquid at room temperature, and substantially A cosmetic for a body characterized by not containing moisture. The details will be described below.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The ethanol of the component (A) used in the present invention gives a refreshing sensation when applied to the skin, and its amount is 25 to 60% by weight of the total composition (hereinafter simply referred to as " % "), And more preferably 35 to 50%
It is. If it is less than 25%, a sufficient refreshing feeling cannot be obtained, and if it is more than 60%, irritations such as tingling of the skin are felt, which is not preferable.

[0007] In the present invention, the starch powder of component (B) and / or silicic anhydride having an average primary particle size of 1 µm or more has an effect of giving the skin a dry feeling.

[0008] Examples of the starch powder used in the present invention include corn starch, potato starch, rice starch and the like, and one or more of these can be appropriately selected and used. Among them, corn starch is preferred. Average primary particle size is 1
Commercial products such as SYLYSIA series manufactured by Fuji Silysia Chemical Ltd. can be used as the silicic acid anhydride having a size of μm or more.

The amount of the component (B) is from 10 to 4
0%, more preferably 20 to 30%. If it is less than 10%, a sufficient smooth feeling cannot be obtained, and if it exceeds 40%, whiteness remains on the skin, which is not preferable.

In the present invention, silicic anhydride having an average primary particle diameter of component (C) of less than 0.1 μm has an effect of imparting a good viscosity suitable for usability. AEROSIL130, 200,
No. 300 and No. 380. The compounding amount of the component (C) is 1 to 5%, more preferably 2 to 3% of the whole composition. If it is less than 1%, sufficient viscosity cannot be obtained, and if it is more than 5%, the skin feels blemishes and the feeling of dryness is reduced.

In the present invention, the nonionic surfactant having an HLB of 12 or more which is liquid at room temperature of the component (D) improves the dispersibility of the component (C) and synergistically provides a sufficient viscosity to the system. There is an effect to give.

The nonionic surfactant having a HLB of 12 or more at room temperature and used as a component (D) in the present invention is not particularly limited as long as it is commonly used in cosmetics. Polyoxyethylene glyceryl acid, hexaglyceryl monolaurate, decaglyceryl monolaurate, decaglyceryl monooleate,
Decaglyceryl monolinoleate, decaglyceryl monoisostearate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan monoisostearate, polyoxyethylene sorbit monolaurate,
Polyoxyethylene sorbit tetraoleate, polyoxyethylene castor oil, polyethylene glycol monolaurate, polyoxyethylene lauryl ether, polyoxyethylene oleyl ether, polyoxyethylene nonyl phenyl ether, polyoxyethylene isostearate hydrogenated castor oil, etc. . Among these, polyoxyethylene sorbitan monooleate (20 EO) and polyoxyethylene hydrogenated castor oil isostearate (50 EO) are particularly preferred. The compounding amount of the component (D) is 0.5 to 3%, more preferably 1 to 2% in the whole composition. If the amount is less than 0.5%, the dispersibility of the component (C) cannot be sufficiently improved. If the amount exceeds 3%, stickiness on the skin occurs and the feeling of dryness decreases. Will be imitated.

In the present invention, the oily component (E) which is liquid at room temperature has a function of reducing the whiteness of the powder when applied to the skin.

There are no particular restrictions on the oil at room temperature for the component (E) used in the present invention, as long as it is commonly used in cosmetics. Among them, fatty acid esters and / or polyhydric alcohol fatty acid esters are preferable. Specifically, fatty acid esters such as isopropyl myristate, octyl palmitate, and cetyl 2-ethylhexanoate, propylene glycol dicaprate,
Glyceryl ethylhexanoate, polyhydric alcohol fatty acid esters such as glyceryl tricaprate, and the like,
One or more of these can be appropriately selected and blended. Of these, glyceryl tri-2-ethylhexanoate and propylene glycol dicaprate are preferred. The compounding amount of the component (E) is 10 to 40%, more preferably 20 to 30% in the whole composition. If the amount is less than 10%, the whiteness of the powder cannot be reduced during skin application,
If it is more than 40%, it may become sticky on the skin and may cause a reduction in the feeling of dryness.

In the cosmetic for body of the present invention, the above components (A) to (E) are blended in specific amounts, respectively.
It is essential that they contain substantially no water. Here, “substantially” means that no water is added, and the moisture contained in the component (A) or the component (B) does not matter. In the present invention, by substantially not adding water, the caking phenomenon of the powder is suppressed, and the stability over time is improved.

The cosmetic for a body of the present invention may further comprise, in addition to the above-mentioned essential components, powders, surfactants, and gels other than those described above in a quantitative and qualitative range that does not impair the effects of the present invention depending on the purpose. Other components commonly used in body cosmetics, such as agents, moisturizers, ultraviolet absorbers, antioxidants, preservatives, chelating agents, coloring agents, fragrances, and cosmetic ingredients for body care, can be added. .

[0017]

The present invention will be described in more detail with reference to the following examples. These do not limit the present invention at all.

Examples 1 to 8 and Comparative Examples 1 to 8 Body Cosmetics Body cosmetics were prepared according to the composition shown in Table 1 and by the following method, and evaluated for feeling in use, usability, and stability over time.

[0019]

[Table 1]

(Production method) A. The components (1) to (8) are uniformly mixed at room temperature. B. A is filled in a container to obtain a body cosmetic.

(Evaluation method) Use feeling and usability The use of the above body cosmetics was tested by a panel of 10 professionals, and the use feeling (coolness, dryness,
Each evaluation item of whiteness) and usability (appropriate viscosity not dripping) was evaluated on a 7-point scale based on the following evaluation criteria. Furthermore, the judgment was made based on the average score.

2. Stability over time The undiluted solution of each of the above samples was added at room temperature, 5 ° C and 40 ° C for 3 hours.
The state of the powder after standing for months was visually observed, and the stability was evaluated using the following evaluation criteria. [Evaluation] [Contents] A: No change. ：: slightly caking, but good redispersibility. Δ: Caking was observed and redispersibility was slightly poor. ×: Clearly caked, poor redispersibility. The results obtained by the above evaluation method are also shown in Table 1.

As is evident from the results in Table 1, the cosmetic for body of the present invention has a refreshing feeling, a dry feeling and a whiteness of powder when applied to the skin, as compared with those of Comparative Examples 1 to 8. It exhibited excellent effects in terms of lack of ease, usability (appropriate viscosity not dripping), and stability over time (no caking phenomenon of powder).

Example 9 Body Cosmetic (Ingredient) (%) Ethanol 45.0 2. Potato starch 15.0 3. 3. Silicic anhydride (average particle size: 5 μm) 10.0 4. Silicic anhydride (average particle size 0.01 μm) 2.0 5. Polyoxyethylene isostearate 1.0 Hardened castor oil (50 EO) Propylene glycol dicaprate 27.0

(Production method) Components 1 to 6 are uniformly mixed at room temperature. Example 9 shows that when applied to the skin, a refreshing feeling, a dry feeling, a lack of whiteness of the powder, a usability (appropriate viscosity that does not drip), and a stability with time (the absence of a caking phenomenon of the powder) And a body cosmetic having an excellent effect.

[0026]

As described in detail above, the body cosmetic of the present invention has a refreshing feeling and a dry feeling when applied to the skin, the whiteness of the powder is not conspicuous, and it has a moderate viscosity. It has excellent stability, has no caking of powder over time, has very good stability, and has excellent quality as a body cosmetic.

[Table 2]

[Procedure amendment]

[Submission date] January 30, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

Examples 1 to 8 and Comparative Examples 1 to 8 Body cosmetics Body cosmetics were prepared according to the compositions shown in Tables 1 and 2 and by the following production methods, and evaluated for feeling of use, usability, and stability over time. did.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

[0019]

[Table 1]

[Table 2]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0022

[Correction method] Change

[Correction contents]

2. Stability over time The undiluted solution of each of the above samples was added at room temperature, 5 ° C and 40 ° C for 3 hours.
The state of the powder after standing for months was visually observed, and the stability was evaluated using the following evaluation criteria. [Evaluation] [Content] A: No change. 〇: Slightly caked, but good redispersibility. Δ: Caking was observed and redispersibility was slightly poor. ×: Clearly caked, poor redispersibility. Tables 1 and 2 also show the results obtained by the above evaluation method.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

As is clear from the results in Tables 1 and 2 ,
Compared with those of Comparative Examples 1 to 8, the cosmetic for a body of the present invention has a refreshing sensation, a dry sensation, a lack of whiteness of powder, and a usability (appropriate viscosity that does not drip) when applied to the skin. And an excellent effect on the stability over time (the absence of the caking phenomenon of the powder). ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 17, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

[0019]

[Table 1]

[Table 2]

Claims (3)

[Claims] 1. The following components (A) to (E): (A) 25 to 60% by weight of ethanol (B) Starch powder and / or an average primary particle diameter of 1 μm
The above silicic acid 10 to 40% by weight (C) Silicic anhydride having an average primary particle diameter of less than 0.1 μm
(D) 0.5 to 3% by weight of a nonionic surfactant having an HLB liquid at room temperature of 12 or more (E) 10 to 40% by weight of an oily agent liquid at room temperature, and substantially Body cosmetics characterized by not containing moisture. 2. The body cosmetic according to claim 1, wherein the starch powder of the component (B) is corn starch. 3. The cosmetic for a body according to claim 1, wherein the component (E) is a fatty acid ester and / or a polyhydric alcohol fatty acid ester.