JP2009263324A - Cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair dye which is obtained by combination of natural raw materials and can dye hairs black, without the risk of skin irritation caused by the use of synthetic hair dyes obtained by blending p-phenylenediamine, aminophenol, phenylenediamine or the like. <P>SOLUTION: The dyeability and safety of this hair dye is improved by using the lamoon water being an acidic plant water and the Angelica keiskei extract of a yellow ingredient in addition to henna including lawsone being a dye component because the use of henna by simply blending a pure water therewith does not improve the dyeability. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

Detailed Description of the Invention

TECHNICAL FIELD OF THE INVENTION

The dry powder of Lawsonia inertis (INCI: HENNA) is hereinafter referred to as henna. The use of henna alone or a mixture of other plant powders and water is common. However, with this, it is difficult to obtain a hair color that gray hair thinks. Accordingly, some of these have been blended with para-phenylenediamine, aminophenol, phenylenediamine and the like to increase hair dyeing properties, but this is a serious risk of skin irritation. Many plant dyes used in cosmetics are already known and are used in a combination of logwood extract, sicon extract, turmeric extract, chlorophyll, walnut extract, sicon extract and the like. However, there is nothing that satisfies the gray hair dyeing.
Henna's staining power is already a known fact. However, satisfactory hair dyeing properties have not been obtained. It is significant that black hair can be dyed with a combination of natural raw materials without using a synthetic hair dye.

It is known that by adding an acidifying agent such as citric acid, acetic acid or malic acid to henna, the hair dyeing property is enhanced. But it turns from red to reddish brown, but not black.

Problems to be solved by the invention

It is an important factor to consider the nature of the water to be mixed, because the hair dyeability cannot be improved by simply mixing henna with pure water. The hair dyeing property is improved by searching for acidic water in plant water. Due to the usefulness of moon peach water from various plant waters, extracts, etc., we found distilled water from moon peach grown in red soil in the northern part of Okinawa. Moon peach water has been confirmed to be effective in preventing UV rays, promoting hair growth on the scalp and hair roots, and making black hair.

In order to make the hair closer to black hair, it is important to use a yellow dye component.

Means for solving the problem

Henna is used as a dry powder in North Africa, the Middle East, and India, but quality may be an issue. It is important to select products that ensure quality after a thorough discussion with the manufacturer, such as impurities, active ingredients, and bacteria. The content of Lawson, a dye component contained in henna, is particularly important, and a dye component containing at least 1% is required.

Ashitaba extract has different extract contents depending on the extraction method of the extract, but it must be excellent in light resistance to ultraviolet rays containing at least 0.02% of chalcone. Ashitaba extract contains coumarin that exhibits a yellow-green fluorescent color when irradiated with ultraviolet rays in the same manner as chalcone, and is more effective for staining.

Moon peaches vary in pH depending on where they grow in Okinawa. The pH of distilled water obtained from the northern peach is about 4, and the pH of distilled water obtained from the southern peach is around 6. Therefore, it is preferable to use the one in the north region of Moon Momosui which has an acidity preferable for dyeability. A method of enhancing the hair dyeing property by adjusting the pH with strongly acidic (pH 3 or less) electrolyzed water and moon peach water is an effective means.

As the simplest method, about 50 parts of henna is mixed with about 50 parts of moon peach water heated to about 40-50 ° C. and about 50 parts of Ashitaba extract at home. Apply to hair and leave at room temperature for 30 minutes, then rinse thoroughly with warm water. Dry the towel. Preferably, the hair is moistened with warm hot water, applied, covered with a foil or a warm towel from above, and left for about 60 minutes, and then rinsed with warm water.

The range in which the present invention can be used is wide, and can be applied to various hair dyes in powder, liquid, paste, and solid forms. Applies to shampoos, rinses, treatments and conditioners.

In the present invention, it is not outside the scope of the claims to use a mixture of henna and various herbs.

The sample is prepared by mixing an aqueous system heated to 40 to 50 ° C. and henna powder.

The invention's effect

(Dyeing property)

染色性評価法；弱い ×、 やや良い △、 良い ○、 非常に良い ◎
（処理時間の効果）Each sample is applied to the hair for 30 people in their 30s to 60s with conspicuous gray hair, and is washed with water and dried for 30 minutes. Wash your hair with shampoo at night. Repeat this daily for 5 days. The hair dyeability was evaluated outdoors according to the following criteria.
Dyeability evaluation method: weak ×, slightly good △, good ○, very good ◎

Dyeability evaluation method: weak ×, slightly good △, good ○, very good ◎
(Effect of processing time)

（総合評価）Apply Sample-5 to half-haired hair for 30 minutes and 60 minutes for 5 people in their 40s to 70s who have conspicuous gray hair, and wash and dry. Wash your hair with shampoo at night. Repeat this daily for 5 days. The hair dyeability was evaluated outdoors according to the following criteria.
Dyeability evaluation method: weak ×, slightly good △, good ○, very good ◎

(Comprehensive evaluation)

As shown in Table 3, an excellent hair dye was obtained by blending henna, moon peach water, and ashitaba extract.

Claims (2)

Cosmetics characterized by using henna, moon peach water and ashitaba extract. A hair dye characterized by using henna, moon peach water and Ashitaba extract.