JP5612325B2 - Hair dye composition and hair dyeing method - Google Patents

Description

  The present invention relates to a hair dye composition containing at least an acid dye and an acid, and a hair dyeing method using such a hair dye composition, and the dyed product is greenish even under light with poor color rendering properties. The present invention relates to a hair dye composition and a hair dyeing method that are natural and beautiful.

  In the hair dye for dyeing hair, a coloring agent (pigment) for dyeing hair into a desired color is blended. Various pigments for cosmetics are known, such as acidic dyes, basic dyes, HC dyes, and oxidation dyes. Of these, acidic dyes are mainly used as pigments for “semi-permanent hair dyes” that aim to maintain the hair dyeing effect semi-permanently, and there is a great need for acid dyes in hair dyes. Hair dyes using acid dyes can avoid problems with safety, such as allergies due to oxidative hair dyes, and damage caused by strong alkaline agents and hydrogen peroxide, as well as imparting firmness and stiffness to the hair. Widely used for hair dyeing.

  However, semi-permanent hair dyes have a problem that the dye gradually flows out due to a shampoo treatment after the hair dyeing and fades within a few weeks at the earliest, or becomes colored when the chemical solution adheres to the skin or clothing. In particular, there is a problem that a specific pigment remains after fading and the hair has an unnatural color and affects the subsequent color treatment. In addition, immediately after hair dyeing, there is a large amount of dye that is physically adsorbed on the hair surface, so that a phenomenon occurs in which the dye flows out during hair washing and becomes very dark in the washing solution. The same phenomenon may be seen when sweating. There is a problem that this washing liquid stains the towel when the towel is dried after washing the hair, and the dye that flows out with sweat stains the clothes collar and the hat.

  Brown, black-brown, black, and the like are the main colors used for dyeing gray hair, and generally colors are created by combining several types of acid dyes. In particular, in the case of creating a color tone mainly for use in dyeing gray hair, such as brown and black-brown, orange (dainty color) 205, black 401, purple 401, etc. are widely used (for example, Patent Document 1, 2) By combining them, colors such as brown, black-brown and black are created. Examples of conventional techniques found by using other dyes include those that have improved color fastness and dyeing fastness at the time of washing after dyeing, which is a problem with acidic hair dyes (for example, Patent Document 3). Exists.

  When hair is dyed with a color created by combining acid dyes, there is a problem that a phenomenon (color rendering) that looks different colors occurs under a specific light source. This color rendering is the property of the light source that affects the color appearance of an object, such as specific lighting, and is generally “good” based on natural light. , “Bad” or “high” or “low”.

  Fluorescent lamps and incandescent light bulbs that are frequently used in general households have particularly poor color rendering properties, and may differ greatly from the colors seen under sunlight or lighting with high color rendering properties. For example, when gray hair dyed in brown, dark brown, black, etc. is viewed under a fluorescent lamp or incandescent bulb with poor color rendering properties, it appears to be a dark grayish green color. In particular, there is a problem that a color rendering phenomenon is likely to occur in acidic hair dyes.

  By the way, the phenomenon in which the color appearance differs depending on the type of illumination and the illuminance has been a problem not only in hair color but also in skin care and nail-related. For example, Patent Documents 4 to 6 have been proposed as conventional techniques in skin care using titanium oxide or the like. However, no technology for solving this problem in acidic hair dyes has been proposed.

  In addition to acid dyes, acidic hair dyes are mainly composed of alcohols, organic solvents, organic acids that are pH adjusters, etc., and a thickener added to prevent them from dripping from the hair when used. Has been used. However, in order to enhance the hair dyeing effect, it is necessary to add an acid, an alcohol, or an organic solvent, which causes a decrease in stability. Therefore, the thickener used from the viewpoint of maintaining stability is limited.

  Various thickeners have been proposed to improve the operability of acidic hair dyes used under such conditions (for example, Patent Documents 7 to 9). However, the present situation is that these thickeners do not provide satisfactory results in terms of operability.

  On the other hand, by temporarily coloring the coats of dogs and cats and adding colorful tones, the pet's personality can be drawn out, or the pet's natural color can be applied to pets for pets. Treatment may be performed. Therefore, it is desired to realize a hair dye (coloring agent) having a characteristic of being dyed firmly and beautifully and having less color fading (for example, Non-Patent Document 1).

JP, 2008-0669131, A, etc. JP, 2002-226334, A, etc. Japanese Patent No. 4326170 Patent Claim JP, 2000-198716, A Claims etc. JP, 2009-179598, A Claims etc. JP, 62-53916, A Claims etc. Japanese Patent Publication No. 02-32253 Patent Claim etc. Japanese Patent No. 3425529 Patent Claim etc. Japanese Patent No. 3916194 Patent Claim etc.

"Happy Trimmer" Pet Life Co., Ltd., published in 2009 vol. 35, p59-67

  The present invention has been made under these circumstances, and its purpose is to improve the color fastness and dyeing fastness at the time of washing after dyeing, as well as under fluorescent lamps and incandescent lamps with poor color rendering. A hair dye composition that can be dyed in a natural and beautiful color without being tinged with green, etc., has less hue change after fading, and has excellent operability if necessary, and uses such a hair dye composition It is to provide a hair dyeing method.

  As mentioned above, when a dyed object dyed with an acidic hair dye with a brown or black-brown color is measured under a fluorescent or incandescent light bulb with poor color rendering properties, it looks dark green. That's right. In order to solve these problems, it can be conceived that a large amount of a red pigment corresponding to a green complementary color may be included. However, by simply using a lot of red pigments, only a reddish color (reddish brown, reddish brown, etc.) can be produced, and the target brown or blackish brown cannot be dyed. In addition, another problem that color fading and dyeing fastness at the time of shampooing worsen occurred. The same applies to colors such as black and gray. When a large amount of red pigment is contained, there is a problem that the intended black or gray cannot be obtained.

  This inventor repeated earnest examination in view of the said situation, and examined the combination of a pigment | dye (acidic dye). As a result, by including a specific acid dye in a specific content and ratio, it has excellent dyeing fastness, natural color after fading, and color rendering properties in various light environments. The present invention was completed by finding that a hair dye composition capable of being dyed in a natural and beautiful color under a fluorescent lamp or an incandescent lamp with poor brightness can be realized.

  That is, the hair dye composition of the present invention comprises (A) Red No. 504, (B) Orange No. 205, (C) Black No. 401 and the acid dye in a hair dye composition containing at least an acid dye and an acid. (D) Purple 401 is contained, and (A) content is 0.001 to 1.0% (meaning “mass%”, the same shall apply hereinafter), and (A) and (B) are contained. The ratio [(A) :( B)] is 8: 1 to 1:10, and the content of (C) is 0.1% or less (including 0%), and (C) and (D ) Has a gist in that the total content is 0.3% or less (not including 0%).

  The “acid dye” used in the hair dye composition of the present invention is the acid in the tar dye described in the ministerial ordinance (Ministry of Health and Welfare No. 30 of 1971) that defines the tar dye that can be used for pharmaceuticals and the like. It is a dye.

  The hair dye composition of the present invention is further selected as an acidic dye from the group consisting of (E) Yellow No. 4, Yellow No. 5, Yellow No. 203, Yellow No. 403 (1), Yellow No. 406 and Yellow No. 407. 1 type or 2 or more types can also be mix | blended, and by this, delicate adjustment of a color tone is attained and a wider color tone is obtained.

  The hair dye composition of the present invention is supposed to be used for dyeing human hair, but is also useful as a dye used for dyeing dog or cat hair.

  If necessary, the hair dye composition of the present invention further contains a carboxyvinyl polymer and a polyacrylic acid amide, which makes the hair dye composition excellent in operability.

  By dyeing with the hair dye composition of the present invention as described above, the dyed object after dyeing looks natural and beautiful without being greenish even under fluorescent lamps and incandescent lamps with poor color rendering properties. It becomes like this.

  In the present invention, the acidic dye contains (A) Red No. 504, (B) Orange No. 205, (C) Black No. 401 and (D) Purple No. 401, and the content and content ratio thereof are strictly limited. By stipulating, it can be dyed in a color that looks natural and beautiful without tinged with greenishness even under fluorescent lamps and incandescent lamps with poor color rendering properties, and there is little color fading at the time of washing the hair and dyeing fastness An excellent hair dye composition in which the color after fading can be seen naturally was realized.

It is the drawing substitute photograph which showed the state of the color under a high color-rendering fluorescent lamp by comparing the prescription example 29 (hair bundle A) and the prescription example 32 (hair bundle B). It is the drawing substitute photograph which showed the state of the color under an incandescent lamp by comparing the prescription example 29 (hair bundle A) and the prescription example 32 (hair bundle B). It is the drawing substitute photograph which showed the state of the color under the fluorescent lamp which is not a high color rendering form by comparing the prescription example 29 (hair bundle A) and the prescription example 32 (hair bundle B).

  The hair dye composition of the present invention contains (A) Red No. 504, (B) Orange No. 205, (C) Black No. 401 and (D) Purple No. 401 as acidic dyes, respectively. The content ratio is strictly defined. These acid dyes used in the present invention have the legal dye names "Ponso-SX" (Red 504), "Orange II" (Orange 205), Known as “Naphthol Blue Black” (Black No. 401) and “Alizol Purple” (Purple No. 401).

  In the hair dye composition of the present invention, it is an important requirement to use Red No. 504 as the acid dye, but the content (ratio to the whole hair dye composition: the same applies hereinafter) is 0.001-1. 0.0% is necessary. When the content of Red No. 504 is less than 0.001%, when the object to be dyed is observed under a fluorescent lamp or an incandescent lamp with poor color rendering properties, it becomes tinged with green and beautiful natural colors in the room. The effect of the present invention is not achieved. Moreover, when this content exceeds 1.0%, the amount of the dye physically adsorbed on the hair surface increases, and the dye flows out at the time of shampooing, resulting in discoloration, resulting in towels and clothes. This causes a problem of dyeing of the hair, and a strong reddish color remains on the hair after fading, which affects the subsequent color treatment. The preferable lower limit of the content of Red No. 504 is 0.01% or more (more preferably 0.03% or more), and the preferable upper limit is 0.2% or less (more preferably 0.1% or less).

  The content ratio [(A) :( B)] of (A) Red No. 504 and (B) Orange No. 205 needs to be 8: 1 to 1:10, and the content of Orange No. 205 is set to this ratio. It is necessary to set as appropriate. When this content ratio [(A) :( B)] is larger than 8: 1 [when the content ratio of (A) is increased], red 504 becomes too reddish and the intended brown or black brown color, etc. Can no longer be created. When the content ratio [(A) :( B)] is smaller than 1:10 [the content ratio of (A) decreases], the object to be dyed is measured under a fluorescent lamp or an incandescent lamp with poor color rendering properties. When it is colored, it is tinged with green and cannot be seen as a natural beautiful color in the room, so a sufficient effect cannot be expected. A preferable upper limit of the content ratio [(A) :( B)] is 1: 1 or less, and a preferable lower limit is 1: 8 or more.

  The reason why such a phenomenon occurs when the content ratio [(A) :( B)] is smaller than 1:10 has not been clarified, but is probably orange 205. Is preferentially dyed on the hair and the dyeing of Red No. 504 is inhibited, so that it is considered that the effect of Red No. 504 cannot be sufficiently obtained.

  The hair dye composition of the present invention contains (C) black 401 and (D) purple 401 in addition to (A) red 504 and (B) orange 205, of which black The content of No. 401 needs to be 0.1% or less. When the content of black No. 401 exceeds 0.1% and becomes excessive, when the object to be dyed is observed under a fluorescent lamp or an incandescent lamp with poor color rendering properties, it becomes greenish and natural in the room. It disappears in a beautiful color. The upper limit with preferable content of black 401 is 0.05% or less.

  However, the content of Black No. 401 can be 0% if necessary. The hues of shades used for dyeing gray hair such as brown and brown are roughly varied from red to yellow, and the intended brightness and hue differ depending on the preference of the subject, so (C) Black No. 401 and (D) The content of purple 401 will be adjusted. Therefore, (C) Black No. 401 may not be required depending on the intended brown brightness and hue (see Formulation Example 44 below).

  Purple No. 401 used in the present invention is an acidic dye necessary for producing a color frequently used for hair coloring such as brown, black-brown, black, and gray. Black No. 401 and purple No. 401 are acidic dyes that are necessary for dyeing gray hair firmly, such as dark brown and dark brown. The total content of (C) Black No. 401 and (D) Purple No. 401 increases the amount of dye that physically adsorbs to the hair surface when it is excessive. The color will fade darkly, resulting in a problem of dyeing on towels and clothing. For these reasons, the total content needs to be 0.3% or less. Preferably it is 0.2% or less. However, the total content is preferably 0.05% or more (more preferably 0.1% or more) in order to dye white hair firmly with a dark brown or black-brown color tone. In particular, in order to effectively exhibit the above-described effect due to purple 401, the content of purple 401 is preferably 0.01% or more (more preferably 0.06% or more).

  In addition, when (C) is contained, the content ratio [(C) :( D)] of (C) and (D) affects the change in color after fading in the object to be dyed. [(C) :( D)] is preferably in the range of 5: 1 to 1: 7. That is, when [(C) :( D)] is greater than 5: 1, fading progresses, so that redness gradually increases. When it is less than 1: 7, fading proceeds. Thus, gradually increasing yellowishness becomes a problem. A more preferable range of [(C) :( D)] is 5: 4 to 1: 5.

  In the hair dye composition of the present invention, in addition to the acid dyes of the above (A) to (D), if necessary, yellow acid dyes (E) Yellow 4, Yellow 5, Yellow 203, Yellow 403 ( 1) One or more selected from yellow 406 and yellow 407 can be further blended. By including these dyes, it is possible to finely adjust the color tone, obtain a wider range of colors, and under various light environments such as natural light, fluorescent light, incandescent light bulb, etc. Also looks natural and beautiful.

  However, when these yellow acid dyes are contained, it is preferable to contain 0.01% or more in order to exert the effect. However, if the content is excessive, discoloration during shampooing becomes severe, so 0.5% or less is preferable.

  Moreover, in the hair dye composition of this invention, as long as the requirements prescribed | regulated above are satisfied, you may contain other acid dyes generally known as needed. As a result, the color of the object to be dyed can be brought close to the target color. Examples of such acid dyes include Red No. 2, Red No. 3, Red No. 102, Red No. 104 (1), Red No. 105 (1), Red No. 106, Green No. 3, Blue No. 1, Blue No. 2, Red 201, Red 227, Red 230 (1), Red 230 (2), Red 231, Red 232, Orange 207, Yellow 202 (1), Yellow 202 (2), Green 201 , Green 204, Green 205, Blue 202, Blue 203, Blue 205, Brown 201, Red 401, Red 502, Red 503, Red 506, Orange 402, Yellow 402, Green 401, green 402, etc.

  The hair dye composition of the present invention contains at least the above acidic dye and an acid, but the acid in the hair dye composition (acid hair dye) mainly makes the hair cationic and adsorbs the anionic acid dye to the hair. There is an action to facilitate. The hair dye composition of the present invention has a pH of 1.5 to 5.0, preferably 1.5 to 4.0, and a pH of less than 1.5 is not preferable from the viewpoint of safety such as skin irritation. If the pH exceeds 5.0, the hair dyeability is impaired. The acid used to bring the hair dye composition to this suitable pH is not particularly limited, but is not limited to inorganic acids such as hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid, acetic acid, citric acid, tartaric acid, propionic acid, lactic acid, salicylic acid. One or more organic acids such as glycolic acid, succinic acid, malic acid and butyric acid can be used. Among these, lactic acid is particularly preferable because the finished touch is very good. Further, by combining alkali metal salts of these acids such as sodium lactate, sodium citrate, sodium hydroxide, disodium hydrogen phosphate, potassium hydroxide, etc., pH buffering ability within a suitable pH range Can be given.

  If necessary, the hair dye composition of the present invention may contain a carboxyvinyl polymer and a polyacrylic acid amide, and these components are mainly viscous in the hair dye composition to facilitate application to the hair. It improves operability.

  Of these, the carboxyvinyl polymer is mainly a polymer of acrylic acid, and is also commercially available as a dispersant and an emulsion stabilizer in addition to the thickener. Examples of commercially available carboxyvinyl polymers include trade names Carbopol 934, 940, 941, 980, 981, ULTREZ10 (manufactured by Lubrizol), and the like.

  The content when the carboxyvinyl polymer is contained is not particularly limited as long as the effect is exhibited, but is preferably about 0.1 to 3%, more preferably 0.5 to 2 with respect to the entire hair dye composition. %. When the content of the carboxyvinyl polymer is less than 0.1%, it is not preferable because dripping occurs during the treatment or the stability of the dosage form is deteriorated. On the other hand, if the content exceeds 3%, the viscosity becomes so high that it is difficult to perform the treatment.

  Polyacrylamide is also commercially available as a dispersant and an emulsion stabilizer in addition to a thickener. Commercial products of polyacrylic acid amide include polyacrylic acid amide (40%), light liquid isoparaffin (24%), polyoxyethylene lauryl ether (7E.0) (6%), and purified water (30%). Examples thereof include a premixed gelling agent “Sepigel 305 (manufactured by SEPPIC, trade name)”.

  The content of the polyacrylic acid amide is not particularly limited as long as the effect is exhibited, but is preferably about 3 to 7%, more preferably about 5 to 6% with respect to the entire hair dye composition. . When the content of polyacrylic acid amide is less than 3%, it is not preferable because dripping occurs during the treatment. Moreover, when content exceeds 7%, since a viscosity becomes high too much and it becomes difficult to treat, it is not preferable.

  In addition, although said carboxy vinyl polymer and polyacrylic acid amide are used together, as a viscosity at the time of use, from a viewpoint of operativity (liquid dripping and elongation are good), liquid temperature: 30000 at 30 degreeC About 130,000 mPa · s is suitable.

  The hair dye composition of the present invention may contain additives that are usually blended. Examples of such additives include oils such as fats and oils, petrolatum, waxes, moisturizers, surfactants (anionic surfactants, cationic surfactants, nonionic surfactants, amphoteric interfaces). Activators), silicones, cationized polymers, chelating agents, antioxidants, stabilizers, pH adjusters, solvents, anti-inflammatory agents, fragrances and the like, and these can be blended to a normal extent.

  As the dosage form of the hair dye composition using the acidic dye of the present invention, a cream dosage form is useful, but a gel dosage form can also be used.

  Next, the present invention will be described more specifically by way of examples. However, the following examples are not intended to limit the present invention, and all modifications can be made without departing from the spirit of the above and following descriptions. To be included in the scope.

[Example 1]
The basic formulation of the hair dye composition used in the examples is as follows. All units are mass%.
Benzyl alcohol (solvent) 4.0%
Ethanol (solvent) 6.0%
Polyacrylamide 3.0%
Carboxy vinyl polymer 2.0%
Lactic acid (acid) Amount to make pH 3.5 Acid dyes Examination amount (each table)
Purified water balance (total amount to 100%)

  The formulation example which mix | blended various acidic dyes with the above-mentioned basic prescription was prepared by the conventional method. First, in order to screen for effective dyes, the following tests were conducted.

<Color rendering evaluation test 1>
The hair dyes (10.0 cm, 1 cm) of human hair prepared by preparing acid hair dyes (Prescription Examples 1 to 10) shown in Tables 1 and 2 below and not receiving chemical treatment (oxidative hair dyeing, decoloring treatment, etc.) 0.0 g, 100% gray hair) and left at 45 ° C. for 15 minutes. Thereafter, it was washed with water, washed with a 10% aqueous solution of triethanolamine lauryl sulfate, and then air-dried. At this stage, (a) under the high color rendering fluorescent lamp for color evaluation, (b) under the non-high color rendering fluorescent lamp, and (c) under the incandescent lamp Was evaluated visually. As evaluation criteria, JIS color name book 2nd edition (JIS Z 8102 compliant, Japanese Standards Association) was used as a reference, and system color names and Munsell values were shown in Tables 1 and 2 as reference values.

  The Munsell value is a kind of color system that is standardized in Japan as JIS Z 8721 (color display method using three attributes), and represents “hue lightness / saturation”. The hue of the Munsell color system is roughly divided into 10 hues (R, YR, Y, GY, G, BG, B, PB, P, RP), and these basic 10 colors are divided into 10 to 1-10. It is added to the initial letter of the color name. For example, “BG” is 10BG, and “YELLOW” is 5Y. Further, the lightness of the Munsell color system is 1 to 10, and the saturation is expressed between 0 and 14.

  Non-high color rendering fluorescent lamps (white: color temperature about 4200K, manufactured by iVision), incandescent bulbs (bulb color: color temperature about 2800K, manufactured by Panasonic), color evaluation high color rendering fluorescent lamps (color rendering AAA, daytime) White: a color temperature of about 5000 K, manufactured by iVision) was used.

<Color fading test>
A hair bundle dyed by the same dyeing method as in the color rendering evaluation test was immersed in a 1% aqueous solution of sodium lauryl sulfate (500 ml) at 40 ° C. for 15 minutes, then washed thoroughly with water and air-dried. “Color fading” after fading was visually evaluated by a specialized panel (10 persons) and judged according to the following criteria.

[Evaluation criteria for color fading test]
3 points: very little 2 points: little 1 point: fading 0 points: very fading

(Evaluation criteria for total value)
◎: 26 to 30 points ○: 21 to 25 points △: 16 to 20 points ×: 0 to 15 points

  These results are shown in Tables 1 and 2 below.

  As is apparent from the results of Tables 1 and 2, (A) Red No. 504 (Formulation Example 1) has a substantially constant saturation even under fluorescent lamps and incandescent lamps that are not highly color-rendering. It can be seen that it has unique properties.

  It can also be seen that (B) Orange No. 205 (Prescription Example 7) has very little color fading. Furthermore, the combination of (A) Red No. 504 and (B) Orange No. 205 (Formulation Example 10) shows almost no change in hue and saturation under high color rendering fluorescent lamps, fluorescent lamps and incandescent lamps. Without any color loss.

  Based on these results, by blending (A) Red No. 504, which has the property that the saturation does not decrease under fluorescent lamps and incandescent lamps, the color tone such as brown, black-brown, and black is not under high color rendering. Under incandescent bulbs, it is considered that a hair dye composition that does not have a greenish taste can be obtained.

[Example 2]
Various acid dyes are blended in the basic formulation shown in Example 1 to prepare various hair dye compositions (Prescription Examples 11 to 52) shown in Tables 3 to 7 below, and the color fading test shown in Example 1 In addition, the following color rendering evaluation test 2 and a color change test before and after the fading test were performed. The results are also shown in Tables 3-7 below.

<Color rendering evaluation test 2>
A hair dye composition (Prescription Examples 11 to 52) shown in Tables 3 to 7 below is prepared, and a hair bundle (10.0 cm, hair derived from a person who has not been subjected to chemical treatment (oxidative dyeing, decolorization treatment, etc.) 1.0 g, 100% gray hair) and left at 45 ° C. for 15 minutes. Thereafter, it was washed with water, washed with a 10% aqueous solution of triethanolamine lauryl sulfate, and then air-dried. At this stage, (a) “green strength” under a non-high color rendering fluorescent lamp, (b) “green strength” under an incandescent bulb, (c) under high color rendering fluorescent lamp for color evaluation The “color tone” was evaluated visually by a professional panelist (10 persons) and judged according to the following criteria.

[Evaluation criteria for green strength under fluorescent lamps and incandescent lamps that are not highly color-rendering]
3 points: I don't feel “green” at all 2 points: I do n’t feel much “green” 1 point: I feel “green” 0 point: I feel very “green”

(Evaluation criteria for total value)
◎: 26 to 30 points ○: 21 to 25 points △: 16 to 20 points ×: 0 to 15 points

[Evaluation criteria for color tone under high color rendering fluorescent lamp for color evaluation]
3 points: Brown with no “redness” 2 points: Brown with a little “redness” 1 point: Brown with “redness” 0 points: Brown with “redness”

(Evaluation criteria for total value)
◎: 26 to 30 points ○: 21 to 25 points △: 16 to 20 points ×: 0 to 15 points

  For the test, as in Example 1, a fluorescent lamp that is not highly color-rendering (white: color temperature about 4200K, manufactured by iVision), an incandescent bulb (bulb color: color temperature about 2800K, manufactured by Panasonic), and a high color rendering type for color evaluation. Fluorescent lamps (color rendering AAA, neutral white: color temperature about 5000K, manufactured by iVision) were used.

<Color change test before and after fading test>
The degree of fading of the hair bundle after the color fading test was compared with the hair bundle before the treatment, and the change in color was evaluated visually by a specialized panelist (10 persons).

[Evaluation criteria for color change test before and after fading test]
3 points: no change 2 points: almost no change 1 point: slightly changed 0 point: greatly changed

(Evaluation criteria for total value)
◎: 26 to 30 points ○: 21 to 25 points △: 16 to 20 points ×: 0 to 15 points

  These results can be considered as follows. (A) Red 504, (B) Orange 205, (C) Black 401, (D) Purple 401 (Prescription Examples 11, 17, 23, 31-34, 36- 46, 49 to 51), under fluorescent lamps that are not highly color-rendering and under incandescent light bulbs, the intensity of greenness is not felt, and there is no reddish color under high-color-rendering fluorescent lamps. I understand that there are few.

  The prescription example 29 (hair bundle A) and the prescription example 32 (hair bundle B) shown above are compared in the state of color under a high color rendering fluorescent lamp, and FIG. 1 shows the color under an incandescent bulb. 2 is compared, and the state of color under a fluorescent lamp that is not a high color rendering type is compared and shown in FIG.

[Example 3]
In order to confirm the effect on dog hair, various acidic dyes were blended into the basic formulation shown in Example 1, and various hair dye compositions shown in the following Table 8 (formulation examples 29, 12, 33, 36, 51, 52: the same composition as those shown in Tables 2 to 7) were prepared, and in addition to the color fading test shown in Example 1, the color change test before and after the fading test shown in Example 2, the following: The color rendering evaluation test 3 was conducted. The results are also shown in Table 8 below.

<Color rendering evaluation test 3>
Hair dye bundles of dogs that have not been subjected to chemical treatment (oxidative hair dyeing / bleaching treatment, etc.) shown in Table 8 below (dog type: poodle, hair color: white, about 3 cm, 0.5 g) was applied in the same manner as in the color rendering evaluation test 2 and allowed to stand at 45 ° C. for 15 minutes. Thereafter, it was washed with water, washed with a 10% aqueous solution of triethanolamine lauryl sulfate, and then air-dried. At this stage, the panelists who specialize in “green strength” under non-high color rendering fluorescent lamps and incandescent lamps and “color tone” under high color rendering fluorescent lamps for color evaluation for the following evaluation items (10 persons) ) And evaluated by the following criteria.

[Evaluation criteria for green strength under fluorescent lamps and incandescent lamps that are not highly color-rendering]
3 points: I don't feel “green” at all 2 points: I do n’t feel much “green” 1 point: I feel “green” 0 point: I feel very “green”

(Evaluation criteria for total value)
◎: 26 to 30 points ○: 21 to 25 points △: 16 to 20 points ×: 0 to 15 points

[Evaluation criteria for color tone under high color rendering fluorescent lamp for color evaluation]
3 points: Brown with no “redness” 2 points: Brown with a little “redness” 1 point: Brown with “redness” 0 points: Brown with “redness”

(Evaluation criteria for total value)
◎: 26 to 30 points ○: 21 to 25 points △: 16 to 20 points ×: 0 to 15 points

  As is apparent from the results, (A) Red No. 504, (B) Orange No. 205, (C) Black No. 401, (D) Purple No. 401 were appropriately contained (Formulation Examples 12, 33, 36 and 51) show that the same effect as that obtained when human hair is treated is obtained even when the dog's hair is treated.

[Example 4]
A hair dye composition (Prescription Examples 53 to 60) shown in Table 9 below was prepared, and a color panel test under a high color rendering fluorescent lamp for color evaluation was performed by a specialized panel (10 persons). . The dripping test was performed by the following method, and the color tone test under the high color rendering fluorescent lamp for color evaluation was performed in the same manner as in Examples 1 to 3. The xanthan gum, hydroxyethyl cellulose, hydroxypropyl guar gum, tamarind gum, and gellan gum shown in Table 9 are conventionally used as a thickener for cosmetics. The results are also shown in Table 9 below.

<Sag test>
The hair dye composition obtained above is put in a cup, and the drug is taken with a comb. And the dripping at the time of apply | coating to hair was evaluated by the reference | standard by the following points | pieces by visual observation.

[Evaluation criteria for dripping test]
3 points: no dripping 2 points: almost no dripping 1 point: some dripping 0 points: dripping

(Evaluation criteria for total value)
◎: 26 to 30 points ○: 21 to 25 points △: 16 to 20 points ×: 0 to 15 points

  As is clear from this result, the carboxyvinyl polymer and polyacrylic acid amide used together in an appropriate amount (formulation example 55) have no sag when applied to the hair and the operability is good. I understand that.

Claims (6)

  In the hair dye composition containing at least an acid dye and an acid, the acid dye contains (A) Red No. 504, (B) Orange No. 205, (C) Black No. 401 and (D) Purple No. 401, respectively. The content of (A) is 0.001 to 1.0% (meaning “mass%”, hereinafter the same), and the content ratio [(A) :( B)] of (A) and (B) is 8: 1 to 1:10, and the content of (C) is 0.1% or less (including 0%), and the total content of (C) and (D) is 0.3% A hair dye composition characterized by the following (not including 0%):   Furthermore, (E) 1 type, or 2 or more types chosen from the group which consists of (E) yellow No. 4, yellow No. 5, yellow No. 203, yellow No. 403 (1), yellow No. 406, and yellow No. 407 were blended. The hair dye composition according to claim 1, which is a hair dye composition.   The hair dye composition according to claim 1 or 2, which is used for dyeing human hair.   The hair dye composition according to claim 1 or 2, which is used for dyeing dog or cat hair.   Furthermore, the hair dye composition in any one of Claims 1-4 which contains a carboxy vinyl polymer and polyacrylic acid amide. It dye | stains using the hair dye composition in any one of Claims 1-5, and the to-be-dyed material after dyeing | staining is not tinged with greenness naturally under the fluorescent lamp and incandescent lamp with bad color rendering property. A hair dyeing method characterized by making it look beautiful.