JPH10330240A - Powdery cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a powdery cosmetic that has high stability with reduced smell change and good usability by formulating a specific component to a system containing sodium chloride. SOLUTION: This powdery cosmetic is prepared by mixing sodium chloride (suitably in an amount of 10-95 wt.%), liquid oil and/or flavor (0.1-30 wt.% of liquid oil and 0.001-5 wt.% of flavor), sesame oil (0.01-1 wt.%), and chelate agent (0.01-1 wt.%). The liquid oil is, for example, suitably silicone oil. The chelating agent is, for example, edetic acid and its salt. In addition to these essential components, a hydrophilic powder is added to reduce the direct contact between sodium chloride, the liquid oil and/or the flavor thereby more suppressing smell change with the lapse of time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powdery cosmetic containing sodium chloride, and more particularly, to a powdery cosmetic having reduced odor over time, excellent stability, and good usability. About.

[0002]

2. Description of the Related Art Recently, marine therapy (thalassotherapy) has attracted attention, and cosmetics containing various mineral components have been studied. Skin cosmetics and bath preparations containing sodium chloride for the purpose of enhancing the astringent effect and tightening the skin are commercially available.

[0003]

However, cosmetics containing sodium chloride as a main component have a problem that the fragrance in the system is deteriorated during long-term storage, and the oil agent is rancid, so that the odor is changed over time. was there. This phenomenon is significantly accelerated by being left in a high-temperature state or irradiated with light, so that the storage conditions of the product and the material of the container are limited. Therefore, an attempt was made to blend vitamin E as an antioxidant, but almost no satisfactory results were obtained. Therefore, there has been a demand for the development of a cosmetic composition that has a reduced odor over time without impairing the inherent effects of sodium chloride and has excellent long-term stability in quality.

[0004]

Means for Solving the Problems In view of the above-mentioned circumstances, the present inventors have made intensive studies and found that the problem can be solved by containing a specific component, and have completed the present invention. That is, the present invention comprises the following components (A) to (D): (A) sodium chloride (B) liquid oil and / or fragrance (C) sesame oil (D) chelating agent Fees. The details will be described below.

[0005] The sodium chloride as the component (A) of the present invention can be used either as purified or as unpurified crude salt or normal salt. Although the particle size is not particularly limited, it is preferably 50 μm to 2 mm in average particle size in consideration of usability, and an appropriate massage effect can be obtained in this range. The content of sodium chloride in the present invention is not particularly limited, but is preferably 1
It is in the range of 0 to 95% by weight (hereinafter simply referred to as "%"), and more preferably 30 to 80%.

The oil agent as the component (B) of the present invention is not particularly limited as long as it is an oil agent which is used in cosmetics and is liquid at ordinary temperature, but an oil agent having a high emollient effect is desirable. Examples of such oils include hydrocarbon oils such as liquid paraffin and squalane; silicone oils such as methylpolysiloxane; triglyceride oils such as glyceryl tri-2-ethylhexanoate and glyceryl tricaprate; isopropyl myristate, octyl palmitate. And ester oils such as cetyl 2-ethylhexanoate; natural fats and oils such as olive oil and jojoba oil; and higher alcohols such as 2-octyldodecanol. Preferred are liquid paraffin and methylpolysiloxane, and particularly preferred is methylpolysiloxane. The content of oil at room temperature is
Preferably it is 0.1 to 30%, more preferably 5 to 30%.
15%.

As the fragrance, any of a natural fragrance and a synthetic fragrance can be used as desired. The content of the fragrance is preferably 0.01 to 5%, more preferably 0.1 to 3%.

The sesame oil, which is the component (C) of the present invention, is a fatty oil obtained from sesame seeds, contains a large amount of linoleic acid as a fatty acid component, and also contains sesamin, sesamol, and sesamolin. The sesame oil is squeezed,
Further, any of those purified can be used. Sesame oil content is preferably 0.01-1%
And more preferably 0.1 to 0.5%.

Examples of the chelating agent which is the component (D) of the present invention include edetic acid, hydroxyethanediphosphonic acid and salts thereof, and preferably edetic acid and its salts. The content of the chelating agent is preferably 0.01 to
1%, and more preferably 0.05 to 0.5%.

Further, when hydrophilic powder is contained as component (E) in addition to the above essential components, direct contact between sodium chloride and the liquid oil and / or fragrance can be reduced, so The odor can be suppressed. Examples of the hydrophilic powder which is the component (E) of the present invention include crystalline cellulose, mica, talc, silicic anhydride, and the like, and preferably crystalline cellulose. Avicel PH102 (manufactured by Asahi Kasei Corporation) or the like can be used as a commercially available product. The content of the hydrophilic powder is not particularly limited, but is preferably 5 to 50%, more preferably 15 to 35%.

Further, in the powder cosmetic of the present invention, the water content is preferably less than 5%. When the water content is 5% or more, sodium chloride dissolves,
It may not be preferable in terms of product stability.

The powdery cosmetics of the present invention can be used as massage cosmetics, pack cosmetics, bath preparations and the like.

[0013] In addition to the above essential components, the powdery cosmetic of the present invention contains a surfactant, an organic or inorganic powder, a solid or paste-like oil, a water-soluble polymer powder, a cosmetic ingredient, and a humectant. , Dyes and the like can be used as long as the effects of the present invention are not impaired.

[0014]

Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited thereto.

Examples 1 to 4 and Comparative Examples 1 to 5 Powdery Cosmetic Powdery cosmetics having the compositions shown in Table 1 below were produced and evaluated for stability.

[0016]

[Table 1]

(Production method) Components 2 to 8 were mixed, and this was added to and mixed with Component 1 to obtain a powder cosmetic.

(Evaluation Method) Room Temperature Stability Test After the manufactured powdery cosmetics were left at room temperature for 4 weeks, the degree of odor was evaluated. 2. Heat resistance test After the manufactured powder cosmetics were left in a 50 ° C constant temperature bath for 2 weeks, the degree of unpleasant odor was evaluated. 3. Light fastness test The manufactured powder cosmetic was subjected to an environmental test device BEC-II-3.
After standing for 2 weeks on a 50 type (illuminance 30,000 Lux; manufactured by Shimadzu Corporation), the degree of odor was evaluated. The degree of odor was evaluated by a panel specializing in fragrance in accordance with the following criteria.

[0019] The results obtained by the above evaluation method are also shown in Table 1.

As is clear from the evaluation results, the examples according to the present invention have a reduced degree of unpleasant odor, are resistant to heat and light, and have excellent quality stability as compared with conventional products. Was something.

Example 5 Powder Bath Agent (Component) (%) Sodium chloride 50.0 2. Sodium carbonate 15.0 3. Sodium sulfate 21.0 4. Crystalline cellulose 10.0 5. Fragrance (Rose type) 3.0 6. Sesame oil 0.57. Edetate disodium 0.5

(Production method) Components 2 to 7 are mixed, and component 1 is mixed.
To obtain a bath agent. Example 5 was a powder bath agent which was excellent in quality stability and had little change in rose-based aroma even after long-term storage.

[0023]

As described in detail above, the powdery cosmetic of the present invention has a reduced odor over time without impairing the inherent effects of sodium chloride and has resistance to heat and light. And it has excellent long-term stability of quality.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shingo Hiraoka 48-18 Sakaemachi, Kita-ku, Tokyo Inside Kose Research Institute

Claims (3)

[Claims] A powdery cosmetic composition comprising the following components (A) to (D): (A) sodium chloride (B) liquid oil and / or fragrance (C) sesame oil (D) chelating agent Fees. 2. The powdery cosmetic according to claim 1, wherein the liquid oil of the component (B) is a silicone oil. 3. A powdery cosmetic comprising a hydrophilic powder as the component (E) in addition to the component according to claim 1 or 2.