JPH0273009A - Composition, applied onto keratinous substance and skin and having deodorizing effect - Google Patents

Abstract

PURPOSE:To obtain the subject composition, containing fine white powder consisting of zinc oxide and silica gel and having high safety with excellent deodorizing effects. CONSTITUTION:A composition, containing 0.1-60wt.% fine white powder consisting of zinc oxide and silica gel [at a molar ratio within the range of (1:9)-(9:1)] and 0.1-30wt.% dispersant having <=150 pigment dispersibility index for improving the dispersibility of the fine white powder and applied onto keratinous substances and skin. A dermal drug for external use capable of safely deodorizing bad smelling ingredients, such as ammonia or sulfur-based smell, generating from human bodies or hair and body hair treating agents.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is a method for safely deodorizing malodor components such as ammonia and sulfur odor generated from the human body or from hair and body hair treatment agents. ZnO) and silica gel (
S i O.

Zinc oxide and a highly safe composition to be applied on keratinous materials, characterized by containing a white fine powder consisting of nH, o) and a component having a pigment dispersibility index (pour point - wet point) of 150 or less (Z n O) and silica gel (SiO,
The present invention provides an external skin preparation containing a white fine powder consisting of nH, 0) and the above-mentioned pigment dispersant.

The pigment dispersibility index referred to here is a characteristic value obtained by the following method.

[Pigment dispersibility index measurement method]

Take 100g of titanium dioxide in a beaker and add sample 2 to it.
Add 0g and mix thoroughly. Then liquid paraffin #
The amount of liquid paraffin (g) when the titanium dioxide is uniformly wetted is the wetting point. When the beaker is tilted, liquid paraffin is added until it becomes fluid. The amount (g) is taken as the pour point.

Pigment dispersibility index = Pour point (g) - Wet point (g) (Prior art and its drawbacks) Conventionally, as a method of deodorizing hair and body hair treatment compositions and external skin preparations, methods for masking malodorous components have been used. Methods have been used to make bad odors less noticeable by adding fragrances and using perfume tools.

However, in recent years, due to changes in the living environment, slightly scented products have come to be preferred, and masking methods that use large amounts of perfume are no longer preferred. Additionally, the fact that many fragrances are irritating to the skin also makes masking with fragrances difficult.

In addition, bad odors are generated when sweat secreted from sweat glands is decomposed by bacteria. Therefore, in order to prevent the proliferation of these bacteria, disinfectants such as hexamine and zinc peroxide are also added.

Furthermore, astringents such as aluminum chlorohydrate and ethyl alcohol are added to suppress sweat generation. However, there are also problems with the safety of these drugs, and the development of compositions and cosmetics that are highly safe and have excellent deodorizing effects in place of these methods has been awaited.

In addition, cold wave lotions, hair straighteners, bleaching agents, which are keratinous hair or body hair treatment agents,
Many of the raw materials used in depilatory products and depilatory products have bad odors such as ammonia odor, and often generate unpleasant odors during and after treatment. The development of an alternative, highly secure solution has been awaited.

(Solution Means) In order to solve the above-mentioned drawbacks, the inventor of the present application investigated various deodorizing agents, and as a result, developed a white deodorizing agent made of zinc oxide (Z n O) and silica gel (S i O,·n H, O). 0 for compositions and skin external preparations in which fine powder is applied to keratin products.
．． 1 to 60% by weight and a dispersant with a pigment dispersibility index of 150 or less to improve the dispersibility of white fine powder 0.1 to 30
It was discovered that an excellent deodorizing effect could be obtained by blending in a proportion by weight, and the present invention was completed.

(Structure of the Invention) The present invention uses 0.1 to 60% by weight of white fine powder consisting of zinc oxide and silica gel (molar ratio in the range of 1:9 to 9:1) and improves the dispersibility of the white fine powder. This composition consists of a composition applied to keratinous materials and skin containing 0.1 to 30% by weight of a dispersant with a pigment dispersibility index of 150 or less. and external preparations used on the skin, including all compositions for the purpose of deodorization, regardless of whether they are cosmetics, quasi-drugs, or pharmaceuticals as defined in the Pharmaceutical Affairs Law.

Furthermore, by blending the composition of the present invention into cosmetics such as lipsticks and foundations that are not intended for deodorization, it is possible to impart a deodorizing effect to the cosmetics.

The effects of this invention will be made clearer by showing examples of the invention below, but the invention is not limited to these examples.

Further, as a specific example of the white fine powder made of zinc oxide and silica gel that can be used in this invention, 5 manufactured by Titan Kogyo Co., Ltd.
There is something called Z-100.

Example 1 A bar-shaped product was manufactured using the antiperspirant formulation shown in Table 1 using white fine powder consisting of zinc oxide and silica gel and a dispersant with a pigment dispersibility index of 150 or less, and 20 panelists conducted the following tests. The deodorizing effect during use was evaluated. For comparison, similar rod-shaped products were produced and evaluated without blending white fine powder, a dispersant with a pigment dispersibility index of 150 or less, or both. The results are shown in Table-2.

As is clear from the results in Table 2, Example 1, in which white fine powder made of zinc oxide and silica gel and a dispersant were blended,
Compared to Comparative Examples 1 and 2, the deodorizing effect during use is greater.

Example 2 A pump agent was manufactured according to the antiperspirant formulation shown in Table 3 using a fine white powder consisting of zinc oxide and silica gel and a dispersant with a pigment dispersibility index of 150 or less, and 20 panelists tested it. The deodorizing effect during use was evaluated. For comparison, similar pump agents were prepared and evaluated without incorporating white fine powder, a dispersant having a pigment dispersibility index of 150 or less, or both. The results are shown in Table 1-4.

produced and evaluated a similar cream without incorporating a dispersant with a pigment dispersibility index of 150 or less, and without both. The results are shown in Table-6.

As is clear from the results in Table 4, Example 2, in which white fine powder consisting of zinc oxide and silica gel and a dispersant were blended, had a greater deodorizing effect during use than Comparative Examples 3 and 4.

Example 3 A cream was produced according to the depilatory formulation shown in Table 5 using a fine white powder consisting of zinc oxide and silica gel and a dispersant having a pigment dispersibility index of 150 or less.

A panel of 20 people evaluated the deodorizing effect during use. As a comparison, as is clear from the results of white fine powder and Table 6, Example 3, in which a white fine powder consisting of zinc oxide and silica gel and a dispersant were blended, had a better deodorizing effect during use than Comparative Examples 5 and 6. It's getting bigger.

It's getting louder.

Example 4 Anhydrous cream was produced according to the deodorant formulation shown in Table 7 using white fine powder consisting of zinc oxide and silica gel and a dispersant with a pigment dispersibility index of 150 or less. The deodorizing effect after a period of time was evaluated. For comparison, similar anhydrous creams were prepared and evaluated without incorporating zinc oxide, white fine powder, or a dispersant having a pigment dispersibility index of 150 or less. The results are shown in Table-8.

As is clear from the results in Table 8, Example 4, in which white fine powder consisting of zinc oxide and silica gel and a dispersant were blended,
Compared to Comparative Examples 7 and 8, the deodorizing effect after 1 hour of use is greater.

Example 5 A lotion was manufactured according to the Cold Wave I liquid formulation shown in Table 9 using white fine powder consisting of zinc oxide and silica gel and a dispersant with a pigment dispersibility index of 150 or less. The deodorizing effect during use was evaluated.

For comparison, a similar lotion was prepared and evaluated without incorporating white fine powder, a dispersant having a pigment dispersibility index of 150 or less, or both.

The results are shown in Table-10.

A milky lotion was prepared using the formulation of the liquid and evaluated by 20 panelists who used it before and after cold wave lotion (1). For comparison, a similar emulsion was prepared and evaluated without incorporating a white fine powder or a dispersant with a pigment dispersibility index of 150 or less, and neither of them. The results are shown in Table-12.

As is clear from the results in Table 10, Example 5, in which the fine white powder of zinc oxide and silica gel and a dispersant were blended, had a greater deodorizing effect during use than Comparative Examples 9 and 10.

Example 6 Treatment after permanent treatment shown in Table 11 using white fine powder consisting of zinc oxide and silica gel and a dispersant having a pigment dispersibility index of 150 or less.As is clear from the results in Table 12, zinc oxide and silica gel were used. Example 6, in which white fine powder and dispersant were blended, was compared to Comparative Examples 11 and 12.The deodorizing effect was stronger in both cases of use after the Cold Wave Lotion ■ Pre-procedure correction IF (spontaneous) of the liquid. ing.

that's all December 1988 - White

Claims (4)

[Claims] (1) Keratinous substances, especially hair or body hair, characterized by containing 0.1 to 60% by weight of white fine powder consisting of zinc oxide and silica gel (molar ratio in the range of 1:9 to 9:1) A composition having a deodorizing effect that is applied during treatment and after treatment. (2) A composition, particularly for treating perspiration, which has a deodorizing effect by containing a composition as defined in item 1 above. (3) A skin preparation for external use, characterized in that it has a deodorizing effect by containing a composition as defined in item 1 above. (4) formed into the form of a liquid, cream, emulsion, gel, powder, thickened lotion, stick, or formulated by aerosol into the form of a foam or powder;
The composition according to any one of items 1, 2, and 3 above, which is characterized by having a deodorizing effect.