KR101626051B1 - Liquid crystal emusifying agent for hair dye and hair dye comprising the same - Google Patents

Abstract

The present invention relates to a liquid crystal emulsifier for a hair dye and a hair dye containing the same. The liquid crystal emulsifying agent for hair dyeing agent according to the present invention is an emulsifying agent containing hydrogenated lecithin; A humectant containing at least one selected from butylene glycol, polyethylene glycol and glycerin; A stabilizer comprising at least one selected from ceramide, cholesterol, cholesterol derivatives and vitamin-E acetate; An alcohol having 12 to 22 carbon atoms; And an ether-based surfactant.

Description

TECHNICAL FIELD [0001] The present invention relates to a liquid emulsion for hair dye, and a hair dye containing the same. [0002] LIQUID CRYSTAL EMUSIFYING AGENT FOR HAIR DYE AND HAIR DYE COMPRISING THE SAME [0003]

The present invention relates to a liquid crystal emulsifier for a hair dye and a hair dye containing the same.

The function of the aesthetic decoration of the function of the human hair became another important means of the image formation of the individual and the beautiful color of the hair. It is expressed as a way to express your own unique personality along with economic development.

Hair dyeing started to become a part of hairdressing, and hair dyeing started to develop. From 1953, synthetic dyestuffs were continuously synthesized and used, so they were easy to store and purchase, and also had a simple dyeing process. Domestic synthetic hair dye manufacturing technology has already reached the world level. Also, as the aging society enters the society, an increasing number of elderly people who use hair dye to eliminate swishes and new fashion-conscious new generations are accepted as part of the hair color style, and the hair dye market is gradually expanding.

In recent years, various techniques in other fields such as skin care products and drug delivery have been applied to hair dye. However, since the dye is a chemical substance, the scalp is sensitive and scratched, and the scalp becomes sensitive and reddened. It may also cause itching and dryness of the scalp by excessively keratinized as the oil and water balance are broken.

Generally, the cause of hair damage due to dyeing is that the oxidation dye (dye intermediate + dye intermediate) contained in the hair dye preparation 1 and the alkaline agent (ammonia, ammonium carbonate, monoethanolamine) This is because in the swelling softening process, the curls are damaged, and the hydrogen peroxide in the hair dye second oxidizing agent causes the disappearance of the interlayer in the process of decolorizing the natural pigment melanin.

According to the 2008 Korea Consumer Agency data, consumers are concerned about the allergies and irritants of hair dye, and they are complaining about the pain caused by ammonia stings. This is because the irritation caused by ammonia causes headache, eye irritation and discomfort to the consumer during the dyeing procedure, and the hair is easily damaged by stimulation during the operation of the hair dye.

Are dyes such as diamine-based dye of the dye used in the hair dye, that is, p- phenylenediamine (p -phenylenediamine, PPD), p- toluene diamine (p -toluenediamine, PTD) is known to give irritation to the skin and allergic reactions have. Consumers perceive that the hair is damaged in roughness and dryness in the sense of touch when the hair is touched after dyeing the hair. In this case, it can be confirmed that the cuticle layer is broken through the microscopic observation.

Korean Patent Publication No. 10-2007-0091758 Korean Patent Publication No. 10-2008-0065726

In the art, it is necessary to develop a hair dyeing agent which can reduce the allergic reaction caused by the dye, alleviate the irritation of the scalp, reduce ammonia, improve the dyeability, and alleviate hair damage.

In order to solve the above-mentioned problems, it is an object of the present invention to provide a hair dyeing agent capable of minimizing adverse effects of hair dyeing agents, having superior hair flexibility after dyeing, and maintaining sustained moisture.

According to an embodiment of the present invention,

An emulsifier comprising hydrogenated lecithin;

A humectant containing at least one selected from butylene glycol, polyethylene glycol and glycerin;

A stabilizer comprising at least one selected from ceramide, cholesterol, cholesterol derivatives and vitamin-E acetate;

An alcohol having 12 to 22 carbon atoms; And

Ether-based surfactant

The present invention provides a liquid crystal emulsifying agent for hair dyeing agents.

Further, another embodiment of the present invention is a dye-sensitized solar cell comprising: an oxidation dye; And a liquid crystal emulsifier for the hair dye.

In the present invention, the liquid crystal emulsifying technique is applied to the hair dyeing agent in order to minimize the adverse effects of the hair dyeing agent and to maintain the hair softness after dyeing and to maintain the continuous moisture. Accordingly, the hair dye containing the liquid crystal emulsifier according to an embodiment of the present invention reduces the allergic reaction caused by the dye and alleviates the irritation of the scalp. Through the hair dye form of the liquid crystal structure, reduction of ammonia and improvement of dyeability, And a mitigating effect can be expected at the same time.

Particularly, in the hair dye formulation containing the liquid crystal emulsifier according to one embodiment of the present invention, the emulsion of the hair dye formulation containing the oxidation dye has a liquid crystal structure, so that the ammonia in the water phase between the liquid crystal structures is held The irritating odor can be reduced, and the basic performance of color development and sustainability can be maintained. In addition, the hair dye containing the liquid crystal emulsifier according to one embodiment of the present invention can be applied to the base of the hair dye first agent containing the oxidation dye, thereby minimizing the allergic reaction by the dye, thereby alleviating the stimulation of the scalp And can increase the color fastness of hair after dyeing, that is, color retention.

Fig. 1 schematically shows a typical formation structure of a liquid crystal.
Fig. 2 schematically shows a general emulsion and a liquid crystal structure. Fig.
3 schematically shows a multilayer lamellar structure according to an embodiment of the present invention.
4 and 5 are polarization microscope photographs of a hair dye according to an embodiment of the present invention.
6 is a diagram schematically illustrating hair moisture loss of a hair dye according to an embodiment of the present invention.
FIG. 7 is a diagram for evaluating hair damage degree of a hair dye according to an embodiment of the present invention. FIG.
FIG. 8 is a chart for evaluating salt strength of a hair dye according to an embodiment of the present invention. FIG.
9 is a diagram for evaluating dye penetration amount of a hair dyeing agent according to an embodiment of the present invention.

In general, hair dyes can be classified into permanent hair dyes (oxidative dyes), semi-permanent hair dyes (non-oxidative dyes), and temporary colorants depending on the durability of the colored color. The hair dyeing agent of the present invention comprises a hair dyeing agent containing a dyeing agent, a two-type oxidizing dyeing agent made of a hair dyeing agent containing an oxidizing agent, and a scattering agent containing an acid dye, a basic dye or a HC color The present invention relates to a hair dyeing agent.

In the case of oxidative dyeing agents, low molecular weight oxidizing dyes cause oxidative polymerization reaction in the hair to form pigments. Various colors can be obtained, and salt strength is excellent. The most widely used hair dyeing agents to be. Non-oxidative hair dye is a hair dye that is useful for providing natural color close to the primary color. It has relatively little hair damage and can be easily manipulated at the same time as perm.

On the cross section of the skin, skin tissue is formed in a lamellar form in which a layer of ceramides, cholesterol, free fatty acids and the like are stacked, and the skin has a cross-sectional structure like a lamellar liquid crystal structure. Therefore, when the hair dye is made into a liquid crystal emulsion form, it can greatly contribute to enhancement of the homeostasis of the skin. If a lamellar liquid crystal is formed by blending these components, a liquid crystal having a very good texture can be produced. That is, in the present invention, by applying a liquid emulsifying agent to a hair dye, the present inventors developed a technique capable of exhibiting proper penetration effect of the skin while maintaining stability against an effective ingredient constituting the hair dye.

The mechanism for forming the liquid crystal may be varied depending on the characteristics of the surfactant or emulsifier to be used, and an auxiliary agent may be used for strengthening the barrier layer of a stable lamellar structure. A typical formation structure of the liquid crystal is schematically shown in Fig. 1 (a) shows a lamellar liquid crystal structure, and FIG. 1 (b) shows a micellar structure.

In liquid crystals, oil droplets have multilayered lamellar morphologies, and hydrophilic and lipophilic layers are made up of multiple layers, which can entrap and stabilize the active ingredients therein. In the temporary micellar structure, a monomer droplet is formed. This is because the surfactant forms a hydrogen bond with the -OH group in the water phase, and micelles having different shapes may be formed depending on the structure of the surfactant.

The general emulsion and the liquid crystal structure are schematically shown in Fig. As shown in FIG. 2, the liquid crystal technology and the emulsion formed with micelle have similar emulsification forms, but they are formed in different shapes. Particularly, in FIG. 2 (b), it can be seen that multiple lamella layers are formed around the oil droplets.

Keratinocytes of the human body occupy more than 80% of the whole keratinocyte. In addition, 5 to 10% of melanocytes and 5% of langerhans cells are present. Cells of the epidermis form millions of new cells in the basal layer every day, keratinization, which does not stay in one mantle but starts pushed outward continuously from the epidermis, and cells become increasingly hard corneas. The skin barrier is present in the stratum corneum which is located at the outermost part of the epidermis among the structures of the epidermis, dermis, epidermal appendage and subcutaneous fat constituting the skin, and consists of keratinocytes forming the stratum corneum and intercellular cells filling the space between these cells do. The main component of the lipid is a special lipid called ceramide, which is composed of free fatty acid, cholesterol, and cholesteryl ester. The lipid has a multilayered structure to bind the stratum corneum and plays a crucial role in moisturizing and protecting the skin.

Dry skin symptoms are directly or indirectly related to abnormalities of skin barrier function, such as dry skin or chronic atopic dermatitis lesions and irritant contact dermatitis. In particular, The amount of ceramide that is known to play the most important function, which is the most important amount, decreases with increasing age, and the activity of Ceramidase, an enzyme that degrades ceramides, increases inversely with age. That is, the reduction of ceramide results in damage to the skin barrier, which increases the amount of transdermal water loss and decreases the moisture content of the stratum corneum and causes hair and skin dryness.

In the present invention, a composition for forming a multilamellar lamellar structure so as to be similar to skin lipids constituting a lamellar lamellar structure, using cholesterol, fatty acid, ceramide and the like equivalent to the skin stratum corneum lipid composition, do.

Since the multilayered lamellar structure has physical chemical properties such as a kind of liquid crystal, it is collectively referred to as liquid crystal, and a composition containing a large amount thereof is referred to as a liquid crystal composition.

The lamellar structure is an organic tissue intertwined with the stratum corneum, and can act as hydration and water retention to block any crystals as the skin becomes dry.

Side effects from hair dyeing agents are mainly caused by p-phenylenediamine and toluene-2,5-diamine. The paraphenylenediamine may cause side effects such as allergic contact dermatitis, scalp disease and hair loss, and toluene-2,5-diamine may cause side effects such as urticaria, rash, encrustation and discoloration.

In general, the types of hair dye can be divided into three types: temporary hair dye, permanent hair dye, and permanent hair dye. Here, a product that causes side effects such as skin irritation and allergy is mainly a permanent hair dye.

The temporary hair dye is to physically absorb the dye only on the surface of the hair, and the dye itself is physically adsorbed on the surface of hair or fur. The permanent hair dye agent is a hair dye that causes a chemical change to penetrate into the inside of the hair to produce an insoluble dye. It may damage the hair or cause allergies. Depending on the component, it may be classified into an oxidative type hair dye agent and a non- have.

The oxidizing type hair dyeing agent is mainly divided into a hair dyeing agent first agent and a hair dye second agent, and the hair dye first agent includes a diamine compound, an alkylating agent, a gelling agent, a solvent, a hair protecting agent, an antioxidant, The second agent includes an oxidizing agent, a pH adjusting agent and the like. Diamine compounds such as p-phenylenediamine and toluene-2,5-diamine, 2-methyl-5-hydroxyethylaminophenol, m-aminophenol, N, N ' -Bis (2-hydroxyethyl) -p-phenylenediamine sulfate, p-methylaminophenol, propylene glycol and the like have been reported to cause allergy.

The principle of dyeing is that when the hair is alkalized, the skin layer expands and the diamine compound penetrates into the skin of the eye. At this time, the acidic hydrogen peroxide destroys the melanin pigment of the water quality and discolors the hair, The diamine compound is colored in place of the melanin pigment which has been destroyed.

In the present invention, a liquid crystal means a liquid crystal or a meso-phase material which is an intermediate state between crystals and liquid and forms a crystal having a relatively regular state. The liquid crystal is formed of a complex of a surfactant such as micelle.

According to one embodiment of the present invention, the liquid crystal emulsifier for hair dyeing agent comprises: an emulsifier containing hydrogenated lecithin; A humectant containing at least one selected from butylene glycol, polyethylene glycol and glycerin; A stabilizer comprising at least one selected from ceramide, cholesterol, cholesterol derivatives and vitamin-E acetate; An alcohol having 12 to 22 carbon atoms; And an ether-based surfactant.

In the present invention, the hydrogenated lecithin is a biocompatible material, also called phosphatidyl choline, which is one of the major phospholipid components constituting the animal cell membrane system and has a composition similar to the skin lipid component.

Such lecithin has a structure in which a hydrophilic component such as phosphoric acid and choline is bonded to one side of glycerol and a hydrophilic acyl group is bonded to the other side of glycerol as shown in Formula 1, Is a commonly used material.

[Chemical Formula 1]

In Formula 1, R and R 'are each independently an acyl group having 14 to 22 carbon atoms.

In the present invention, the hydrogenated lecithin may include phosphatidyl choline, phosphatidyl ethanolamine, and lysophosphatidyl choline, and the content of the phosphatidylcholine may be 95% or less based on the total weight of hydrogenated lecithin But it is not limited thereto.

In the present invention, the content of the emulsifier may be 1 to 15% by weight based on the total weight of the liquid crystal emulsifier for hair dye, but is not limited thereto.

In the present invention, the humectant may include at least one selected from butylene glycol, polyethylene glycol, and glycerin.

The content of the moisturizing agent may be 10 to 30% by weight based on the total weight of the liquid crystal emulsifier for hair dye, but is not limited thereto.

In the present invention, the stabilizer may include at least one selected from ceramide, cholesterol, cholesterol derivatives and vitamin-E acetate.

The content of the stabilizer may be 0.1 to 10% by weight based on the total weight of the liquid crystal emulsifier for hair dye, but is not limited thereto.

In the present invention, the alcohol having 12 to 22 carbon atoms may include cetostearyl alcohol.

The content of the alcohol may be 45 to 75% by weight based on the total weight of the liquid crystal emulsifier for hair dye, but is not limited thereto. When the content of the alcohol is out of the range of 45 to 75% by weight based on the total weight of the liquid crystal emulsifier for a hair dye, the stability of the formulation may be improved by increasing the viscosity of the hair dye preparation. However, The dispersibility becomes poor, which may cause a problem that a certain color expression becomes difficult during dyeing.

In the present invention, the ether type surfactant is a component formed by an ether reaction between stearic acid and polyethylene glycol, which are fatty acids, and may be selected from the group consisting of Steareth-2, Steareth-20, (Steareth-21), Steareth-23 (Steareth-23), and the like, but the present invention is not limited thereto.

In the present invention, the content of the ether surfactant may be 10 to 20% by weight based on the total weight of the liquid crystal emulsifier for hair dye, but is not limited thereto.

In the present invention, the pH of the liquid crystal emulsifier for hair dyeing agent may be 6.0 to 10.0, but is not limited thereto.

Further, the hair dyeing agent according to one embodiment of the present invention includes an oxidation dye, and a liquid crystal emulsifier for the hair dyeing agent.

In the present invention, the liquid crystal emulsifier is provided on the surface of the oxidation dye, and the liquid crystal emulsifier can form a multilayer lamellar structure. A multilayer lamellar structure according to one embodiment of the present invention is schematically shown in FIG.

In the present invention, the hair dyeing agent may be a hair dye for oxidizing or a non-oxidizing hair dye. When the hair dyeing agent of the present invention is a hair dye for oxidation, the oxidation dyeing agent may be a two-part formulation consisting of a hair dyeing agent containing an oxidation dye and a hair dyeing agent containing an oxidizing agent. In the dye formulation for oxidation of the 2 formulation, the liquid crystal emulsifier for hair dyeing agent may be contained in either one of the hair dye preparation agent and the hair dye preparation agent, or both.

In the present application, the oxidation dye may include at least one selected from phenylenediamines, aminophenols, toluenediamines, aminonitrophenols, diaminopyridines, diphenylamines, and N-phenyldiamines , But is not limited thereto. More specifically, the oxidation dye may include an oxidation dye precursor, and examples of the oxidation dye precursor include o-aminophenol, m-aminophenol, p-aminophenol, m-phenylenediamine, P-phenylenediamine hydrochloride, p-phenylenediamine hydrochloride, toluene-2,5-diamine, p-phenylenediamine, p-methylaminophenol sulfate, o-aminophenol sulfate, Toluene-2,5-diamine sulfate, p-phenylenediamine sulfate, and the like, but the present invention is not limited thereto. Also, conventionally used direct dyes can be used, and examples thereof include Arianol dyes, p-nitro-o-phenylenediamine, nitro-p-phenylenediamine, 2-amino- -Amino-5-nitrophenol, nitro-p-phenylenediamine hydrochloride, and other vegetable dyes such as piclaminic acid (Henna).

In addition, a coupler may be used for the dyeing agent first agent for the variety of colors to be developed. Examples of the coloring agent include resorcin, m-aminophenol, m-phenylenediamine, pyrogallol, And 1-naphthol, and the like. More specifically, examples of the coloring agent include 2-methine-5-hydroxyethylaminophenol, p-amino-ocresol, m-aminophenol, 2,4-diaminophenoxyethanol hydrochloride, m- Methyl-p-phenylenediamine, p-amino-o-cresol sulfate, 4-ethoxy-m-phenylenediamine sulfate, m-phenylenediamine sulfate, Naphthol, resorcinol, 2-methyl resorcinol and the like.

Also, the hair dye first agent may be a lower alcohol such as ethanol, isopropanol, butanol or benzyl alcohol; Propylene glycol, 1,3-butylene glycol, glycerin, sorbitol and maltitol; Oily components such as lanolin, squalane, liquid paraffin, and vegetable oils; Oxidizing stabilizers such as sulfites and EDTA; A known compounding agent such as ammonia water, ethanol amines, aminomethyl propanol, an alkaline agent of an inorganic alkaline, and a flavoring agent.

As the oxidizing agent which is the second hair dyeing agent, hydrogen peroxide, peroxides and the like are generally used. Examples of the hair dye second agent include stabilizers such as EDTA, phenacetin and sodium stannate; Oily components such as liquid paraffin, vegetable oil; a pH adjusting agent, a perfume, and the like can be blended if necessary.

The above-described two-type oxidative type hair dye agent is usually mixed immediately before use.

When the hair dyeing agent of the present invention is a non-oxidizing type hair dyeing agent, the non-oxidizing type hair dyeing agent may contain one or a mixture of two or more selected from among acid dyes, basic dyes, oil dyes, direct dyes, disperse dyes and HC colors as dyes.

The non-oxidative type hair dye is provided in the form of a cream or lotion containing an oily component such as gel phase or liquid paraffin or fatty alcohol by a water-soluble polymer compound.

The hair dye composition of the present invention can be used within a range that does not impair the effect of the present invention. For example, ammonia, monoethanolamine, aminomethyl propanol or the like is used as an alkali agent, and a nonionic surfactant or an alkyldiethanolamide is used as an increasing agent. Cationic, anionic, and nonionic surfactants are used as the surfactant . In addition, quaternary ammonium salts and quaternized polymers can be used as conditioning agents. In addition, an arbitrary component can be used to make a cream, gel, or liquid form.

According to the present invention, by forming a liquid crystal in the interface structure in the hair dyestuff agent first formulation and delaying the occurrence of the condensation reaction between the oxidation dye precursor and the coupler before applying to the hair, the penetration velocity of the dye precursor and coupler in the hair And penetration (Penetration). In addition, by the hydrogen peroxide stabilization system of the hair dye herbicide second oxidizing agent, the active ingredient of the hair dye herb can be stably penetrated into the hair, and the color development and the sustainability can be improved.

In the present invention, the liquid crystal emulsifying technique is applied to the hair dyeing agent in order to minimize the adverse effects of the hair dyeing agent and to maintain the hair softness after dyeing and to maintain the continuous moisture. Accordingly, the hair dye containing the liquid crystal emulsifier according to an embodiment of the present invention reduces the allergic reaction caused by the dye and alleviates the irritation of the scalp. Through the hair dye form of the liquid crystal structure, reduction of ammonia and improvement of dyeability, And a mitigating effect can be expected at the same time.

Particularly, in the hair dye formulation containing the liquid crystal emulsifier according to one embodiment of the present invention, the emulsion of the hair dye formulation containing the oxidation dye has a liquid crystal structure, so that the ammonia in the water phase between the liquid crystal structures is held The irritating odor can be reduced, and the basic performance of color development and sustainability can be maintained. In addition, the hair dye containing the liquid crystal emulsifier according to one embodiment of the present invention can be applied to the base of the hair dye first agent containing the oxidation dye, thereby minimizing the allergic reaction by the dye, thereby alleviating the stimulation of the scalp And can increase the color fastness of the hair after dyeing, that is, the color retention.

Hereinafter, embodiments of the present invention will be described in more detail by way of examples. However, the following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

<Examples>

&Lt; Preparation Example > Preparation of liquid crystal emulsifier

A liquid crystal emulsifier composition was prepared using the components shown in Table 1 below.

[Table 1]

The water phase and the oil phase were completely dissolved in a water bath at 80 ° C. and then the water phase and the oil phase were added and the homomixer was emulsified at 4,500 rpm for 3 minutes Thereafter, it was cooled to 30 占 폚.

&Lt; Example 1 > Preparation of hair dye first agent

A hair dye preparation was prepared using the ingredients shown in Table 2 below.

[Table 2]

&Lt; Example 2 > Preparation of a hair dye second agent

A hair dye formulation was prepared using the ingredients listed in Table 3 below.

[Table 3]

<Experimental Example> Characteristic evaluation of hair dye

1) Identification of liquid crystal structure

0.5 g of the first hair dye preparation prepared in Example 1 was applied to a slide glass on a thin glass plate, and a liquid crystal structure was confirmed using a polarizing lens of a microscope. The results are shown in FIG. At this time, as a comparative example, a hair dye having the conventional general emulsifier was confirmed.

As shown in FIG. 4, it can be confirmed that the hair dye of Example 1 according to the present invention has a liquid crystal structure.

In addition, the first hair dye preparation prepared in Example 1 and the second hair dye preparation prepared in Example 2 were mixed and 0.5 g was thinly applied on a slide glass. Then, a liquid crystal structure was confirmed using a polarizing lens of a microscope The results are shown in FIG. 5.

As shown in FIG. 5, it can be seen that a large number of liquid crystals are clearly formed in the hair dye according to the present invention, and a fine multilamellar layer is formed around the liquid crystal.

2) Measurement of hair moisture loss

The moisture loss of the hair dye applied with the liquid crystal emulsifier according to the present invention and the hair dye applied with the conventional general emulsifier were measured and are shown in FIG. As shown in FIG. 6, it can be seen that the hair dye having the liquid crystal emulsifier according to the present invention shows a difference of about 20% in moisture loss compared with the hair dye applied with the general emulsifier after 2 weeks of application. Accordingly, it can be seen that the hair dyeing agent to which the liquid crystal emulsifier according to the present invention is applied has a positive effect on the degree of hair moisture loss.

3) Assessment of hair damage

Damage to the hair can be assessed by measuring the degree of damage of the cuticle layer, and the degree of damage to the hair. The result of observation at 900-fold magnification using a scanning microscope is shown in Fig. In the case of damaged hair, the cuticle on the surface of the hair occurs when compared to normal hair, or the shape is not constant and is seen as broken. Particularly, when dyed with a hair dye applying the liquid crystal emulsifier according to the present invention, it is confirmed that the cuticle layer is less broken than when dyed with a hair dye using a general emulsifier. In the absence of any treatment, it is believed that the liquid emulsifier according to the present invention protects the hair during dyeing, considering that the cuticle layer is slightly coarser than before dyeing, but is more smooth than the usual emulsifier wherein breakdown of the cuticle layer is observed .

4) Evaluation of dyeing power

The first hair dye preparation prepared in Example 1 and the second hair dye preparation prepared in Example 2 were mixed at a ratio of 1: 1, and then applied evenly to the human hair. After standing for 30 minutes, it was washed with flowing water using a shampoo solution for 1 minute and then dried using a hair dryer. The color of the dried hair was measured using a colorimeter. The results were compared before and after dyeing using the L * value measured by a colorimeter. When the conventional emulsifier was used, the L * value was 15.42, and when using the liquid crystal emulsifier according to the present invention, the L * value was 13.15. Here, the brightness value and L * value measured by the colorimeter mean that the color is brighter as the value is larger, and the color is darker as the value is smaller. Therefore, it can be predicted that the dyeing agent using the liquid crystal emulsifier according to the present invention has a smaller L * value, thereby improving the dyeing power.

In addition, the brightness of hair before and after dyeing can be more accurately compared through L. When the L values were compared, the L value was 11.5 when the conventional emulsifier was used, and the value was 12.4 when using the liquid emulsifier according to the present invention Respectively. This means that the difference in brightness value of the hair before and after dyeing is large and it is darker.

In addition, the results are shown in FIG. 8 by comparing the salt strength (dewetting state) after 30 shampooing after staining using commercial white moth. As shown in FIG. 8, it can be seen that the color sustainability of the hair dye according to the present invention is excellent.

5) Quantitative analysis of dye penetration

The dyed hair was sampled and the hair cross section was enlarged 500 times using a microtome (Leica Microsystems CM 1850). The result is shown in FIG. As shown in FIG. 9, it can be seen that the hair dye containing the liquid crystal emulsifier according to the present invention has a high dye penetration amount. These results can be expected to prolong the dyeing period and improve the troubles of frequent dyeing.

6) Evaluation of irritability

The stimuli were obtained through a direct use test, and the panel test positive for the allergic contact dermatitis test for the diamine dyes ( p- phenylendiamine, p- toluenediamine) Respectively. The four side effects (swelling, stinging, itching, reddening) of the hair dyeing agent according to the present invention were reduced to almost half as compared with the hair dyeing agent using the general emulsifying agent. As a result, it was confirmed that the hair dyes according to the present invention had a reduced irritation by the diamine dyes due to the continuous moisturizing effect.

[Table 4]

As described above, in the present invention, the liquid crystal emulsifying technique was applied to the hair dyeing agent in order to minimize the side effect of the hair dyeing agent and to maintain the hair softness after dyeing and to maintain the continuous moisture. Accordingly, the hair dye containing the liquid crystal emulsifier according to an embodiment of the present invention reduces the allergic reaction caused by the dye and alleviates the irritation of the scalp. Through the hair dye form of the liquid crystal structure, reduction of ammonia and improvement of dyeability, And a mitigating effect can be expected at the same time.

Particularly, in the hair dye formulation containing the liquid crystal emulsifier according to one embodiment of the present invention, the emulsion of the hair dye formulation containing the oxidation dye has a liquid crystal structure, so that the ammonia in the water phase between the liquid crystal structures is held The irritating odor can be reduced, and the basic performance of color development and sustainability can be maintained. In addition, the hair dye containing the liquid crystal emulsifier according to one embodiment of the present invention can be applied to the base of the hair dye first agent containing the oxidation dye, thereby minimizing the allergic reaction by the dye, thereby alleviating the stimulation of the scalp And can increase the color fastness of hair after dyeing, that is, color retention.

Claims (12)

An emulsifier comprising hydrogenated lecithin;
A humectant containing at least one selected from butylene glycol, polyethylene glycol and glycerin;
A stabilizer comprising at least one selected from ceramide, cholesterol, cholesterol derivatives and vitamin-E acetate;
An alcohol having 12 to 22 carbon atoms; And
Ether-based surfactant
Wherein the emulsifier is a liquid crystal emulsifier for a hair dye,
Wherein the liquid crystal emulsifier for hair dyeing agent forms a multilayer lamellar liquid crystal structure. [2] The liquid crystal emulsifier according to claim 1, wherein the hydrogenated lecithin comprises at least 95% by weight of phosphatidylcholine. The liquid crystal emulsifier according to claim 1, wherein the content of the emulsifier is 1 to 15% by weight based on the total weight of the liquid crystal emulsifier for hair dye. The liquid crystal emulsifier according to claim 1, wherein the content of the moisturizing agent is 10 to 30% by weight based on the total weight of the liquid crystal emulsifier for hair dye. The liquid crystal emulsifier according to claim 1, wherein the content of the stabilizer is 0.1 to 10% by weight based on the total weight of the liquid crystal emulsifier for hair dye. The liquid crystal emulsifier according to claim 1, wherein the content of the alcohol is 45 to 75% by weight based on the total weight of the liquid crystal emulsifier for hair dye. The liquid crystal emulsifier according to claim 1, wherein the content of the ether surfactant is 10 to 20% by weight based on the total weight of the liquid crystal emulsifier for hair dye. The liquid crystal emulsifier according to claim 1, wherein the pH of the liquid crystal emulsifier for hair dyeing agent is 6.0 to 10.0. dyes; And
A liquid crystal emulsifier for hair dyeing agent according to any one of claims 1 to 8
&Lt; / RTI &gt; [Claim 11] The hair dyeing agent according to claim 9, wherein the liquid crystal emulsifier for hair dyeing agent is provided on the surface of the dye and forms a multilayer lamellar structure. [12] The hair dyeing agent according to claim 9, wherein the hair dyeing agent is a hair dye for oxidizing or non-oxidizing hair dye. [12] The dye according to claim 9, wherein the dye comprises at least one selected from the group consisting of phenylenediamines, aminophenols, toluenediamines, aminonitrophenols, diaminopyridines, diphenylamines and N-phenyldiamines Hair dye.

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