An ammonia-free low-sensitizing essential oil composition for dyeing hair, and a preparation method and application thereof

Abstract

The application belongs to the technical field of hair dyes, and particularly relates to an ammonia-free low-allergy essential oil composition for dyeing hair, a preparation method and application thereof; the ammonia-free low-allergy essential oil composition for dyeing hair is composed of the following components: coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil and squalane. The ammonia-free low-allergy essential oil composition provided by the application can simultaneously meet the effects of low irritation, high coloring effect and high dyeing durability.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of hair dyeing agents, and particularly relates to an ammonia-free low-allergy essential oil composition for hair dyeing and a preparation method and application thereof. BACKGROUND

[0002] With the continuous improvement of people's pursuit of beauty, hair dyeing has become a common personal care method. The hair dyes on the market can be roughly divided into plant hair dyes, metal salt hair dyes, direct hair dyes and permanent hair dyes, among which permanent hair dyes still dominate the market.

[0003] The main chemical components in permanent hair dyes include p-phenylenediamine, hydrogen peroxide and ammonia water. The role of ammonia water is to open the scales of hair, helping pigments to penetrate, but it has obvious side effects: strong pungent odor, irritation to the scalp (easy to cause stinging or redness), dry hair after dyeing, and hair dandruff.

[0004] In recent years, there has been widespread concern about using plant essential oils as carriers to more gently, accurately and efficiently deliver dye molecules to the inside of hair strands. For example, Chinese Patent No. CN110051564B discloses a solid color-brightening hair dyeing essential oil prepared by the following components: wheat germ oil, rosemary leaf oil, myrtle leaf oil, lavender oil and jasmine flower oil. The technical solution claims that the essential oil prepared by adding it to the hair dye can make the hair color bright and shiny after dyeing, and the hair is smooth and not knotted, the dyeing is more durable and firm, and the damage to the hair scales caused by the hair dye is effectively reduced. However, the anti-static effect of this technical solution is not significantly improved, and the dyeing durability effect is not clear after only one wash.

[0005] Chinese Patent No. CN118902919A discloses a composition for reducing hair dyeing damage and caring for the scalp, as well as a preparation method and application. The composition of the technical solution is composed of squalane, sea buckthorn fruit oil and camellia seed oil. The composition provided by the technical solution has the effects of reducing the damage and itching of the scalp caused by hair dyeing, caring for the scalp, reducing hair damage, imparting good combing properties and toughness to the hair, and making the hair healthy, based on the mutual cooperation and synergistic effect among squalane, sea buckthorn fruit oil and camellia seed oil. However, the technical solution does not focus on its dyeing effect. SUMMARY

[0006] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides an ammonia-free low-allergy essential oil composition for hair dyeing and a preparation method and application thereof. The ammonia-free low-allergy essential oil composition provided by the present application can simultaneously satisfy the effects of low irritation, high coloring effect and high dyeing durability.

[0007] To achieve the above-mentioned purposes, the first aspect of the present application provides a low-sensitivity essential oil composition for hair dyeing, which is composed of the following components: coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil, and squalane.

[0008] In some embodiments of the present application, the low-sensitivity essential oil composition for hair dyeing is composed of the following components by mass: coconut oil 70-100 parts, camellia seed oil 1-2 parts, grape seed oil 1-2 parts, macadamia seed oil 1-2 parts, jojoba seed oil 1-2 parts, and squalane 1-2 parts.

[0009] Further, the low-sensitivity essential oil composition for hair dyeing is composed of the following components by mass: coconut oil 80-100 parts, camellia seed oil 1-1.5 parts, grape seed oil 1-1.5 parts, macadamia seed oil 1-1.5 parts, jojoba seed oil 1-1.5 parts, and squalane 1-1.5 parts.

[0010] Still further, the low-sensitivity essential oil composition for hair dyeing is composed of the following components by mass: coconut oil 85-95 parts, camellia seed oil 1-1.2 parts, grape seed oil 1-1.2 parts, macadamia seed oil 1-1.2 parts, jojoba seed oil 1-1.2 parts, and squalane 1-1.2 parts.

[0011] Most preferably, the low-sensitivity essential oil composition for hair dyeing is composed of the following components by mass: coconut oil 90 parts, camellia seed oil 1.1 parts, grape seed oil 1.1 parts, macadamia seed oil 1.1 parts, jojoba seed oil 1.1 parts, and squalane 1.1 parts.

[0012] Coconut (Cocos nucifera) oil: extracted from the flesh of coconut, mainly composed of saturated fatty acids, among which medium-chain saturated fatty acids (such as lauric acid and capric acid) account for a high proportion, which has high affinity for keratin and can penetrate into hair fibers, while forming a lubricating film on the surface of the hair.

[0013] Camellia (Camellia japonica) seed oil: extracted from the seeds of camellia fruit, containing various unsaturated fatty acids, tea polyphenols, camellia saponins, tea saponins, vitamin E, etc., which can form a lubricating film on the surface of the hair, with light texture and no stickiness, increase the smoothness and luster of the hair, and soothe the scalp.

[0014] Grape (Vitis vinifera) seed oil: extracted from grape seeds, rich in phenolic compounds, fatty acids, and vitamin E, which can penetrate into the cuticle of the hair, reduce water loss and lock in moisture, repair damaged hair, and enhance the toughness and elasticity of the hair.

[0015] Macadamia ternifolia seed oil: extracted from the seeds of Macadamia ternifolia, rich in fatty acids such as palmitic acid, arachidonic acid, lauric acid, stearic acid, protein, vitamins and minerals, which can deeply penetrate the hair, increase the elasticity and strength of the hair.

[0016] Simmondsia chinensis seed oil: extracted from the seeds of Simmondsia chinensis, rich in high-grade fat, 34-50 carbon wax, free alcohol, natural vitamin E and minerals, which has good penetration and antibacterial properties, and can help the hair to keep moist and soft.

[0017] Squalane: a hydrocarbon oil with small molecules and strong skin affinity, which can combine with keratin in hair to form a protective layer, quickly penetrate into the inside of the hair, fill the pores between the cuticle scales, and has anti-inflammatory and antioxidant properties, which can help to relieve scalp irritation.

[0018] The inventors found through repeated screening and optimization during the experiment that the combination of coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil and squalane as an ammonia-free low-sensitivity essential oil composition can not only reduce the direct contact of irritating chemical components with the scalp, significantly reduce the tingling and burning sensation on the scalp and skin, but also be suitable for sensitive scalp and first-time hair dyeing. On the one hand, it can optimize the opening process of the cuticle scales, and more gently and uniformly open the cuticle scales, so that the color has better color saturation. On the other hand, it can help the dye molecules to enter the cortex more smoothly, so that the dyeing is more full and durable. However, it is necessary to control the mass fraction of coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil and squalane, otherwise the irritation of the hair dyeing product will increase, and the color effect and durability will be poor.

[0019] The second aspect of the present application provides a preparation method of an ammonia-free low-sensitivity essential oil composition for hair dyeing, comprising the following steps: mixing coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil and squalane to obtain the ammonia-free low-sensitivity essential oil composition.

[0020] The third aspect of the present application provides the use of an ammonia-free low-sensitivity essential oil composition for hair dyeing in the preparation of a hair dyeing product.

[0021] Further, the hair dyeing product includes hair dyeing paste and color developing cream.

[0022] The fourth aspect of the present application provides a use method of an ammonia-free low-sensitivity essential oil composition for hair dyeing, which is mixed with other components of the hair dyeing paste to prepare the hair dyeing paste.

[0023] Further, the amount of the ammonia-free low-sensitivity essential oil composition added in the hair dyeing paste is 8-10%.

[0024] Compared with the prior art, the present application has the following beneficial effects:

[0025] The present application adopts coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil and squalane for compounding as an ammonia-free low-sensitivity essential oil composition, and controls the mass fraction of coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil and squalane. Under the cooperation of the above-mentioned components, not only can the irritating chemical components directly contact the scalp be reduced, and the tingling and burning sensation on the scalp and skin can be significantly reduced, but also the opening process of the cuticle can be optimized, and the cuticle can be opened more gently and uniformly, so that the color saturation is better, and on the other hand, as a carrier, the dye molecules can enter the cortex layer more smoothly, so that the dyeing is more full and durable. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The actual photos after 40 times of washing after dyeing with the hair dyeing products of application examples 1-4 and comparative application examples 1-7. DETAILED DESCRIPTION

[0027] In order to make the skilled in the art more clearly understand the technical solutions described in the present application, the following examples are listed for illustration. It should be pointed out that the following examples do not constitute a limitation on the scope of protection required by the present application.

[0028] The raw materials, reagents or devices used in the following examples and comparative examples can be obtained from conventional commercial channels or can be obtained by existing known methods, unless otherwise specified.

[0029] Coconut oil: Zhongshan Kemide Oleochemical Co., Ltd.;

[0030] Camellia seed oil: Hunan Jinchang Biotechnology Co., Ltd.;

[0031] Grape seed oil: Guangzhou Guxi Biological Technology Co., Ltd.;

[0032] Macadamia seed oil: GUSTAV HEESS GMBH;

[0033] Jojoba seed oil: Guangzhou Guxi Biological Technology Co., Ltd.;

[0034] Squalane: APRINNOVA, LLC. Example 1

[0035] Example 1 provides an ammonia-free low-sensitivity essential oil composition for dyeing hair, which is composed of the following mass fractions of components: coconut oil 80 parts, camellia seed oil 1 part, grape seed oil 1 part, macadamia seed oil 1 part, jojoba seed oil 1 part, and squalane 1 part.

[0036] The preparation method of the ammonia-free low-allergy essential oil composition for dyeing hair comprises the following steps: mixing coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil and squalane. Example 2

[0037] Example 2 provides an ammonia-free low-allergy essential oil composition for dyeing hair, which is composed of the following components by mass fraction: coconut oil 100 parts, camellia seed oil 1.5 parts, grape seed oil 1.5 parts, macadamia seed oil 1.5 parts, jojoba seed oil 1.5 parts, and squalane 1.5 parts.

[0038] The preparation method of the ammonia-free low-allergy essential oil composition for dyeing hair comprises the following steps: mixing coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil and squalane. Example 3

[0039] Example 3 provides an ammonia-free low-allergy essential oil composition for dyeing hair, which is composed of the following components by mass fraction: coconut oil 95 parts, camellia seed oil 1.2 parts, grape seed oil 1.2 parts, macadamia seed oil 1.2 parts, jojoba seed oil 1.2 parts, and squalane 1.2 parts.

[0040] The preparation method of the ammonia-free low-allergy essential oil composition for dyeing hair comprises the following steps: mixing coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil and squalane. Example 4

[0041] Example 4 provides an ammonia-free low-allergy essential oil composition for dyeing hair, which is composed of the following components by mass fraction: coconut oil 90 parts, camellia seed oil 1.1 parts, grape seed oil 1.1 parts, macadamia seed oil 1.1 parts, jojoba seed oil 1.1 parts, and squalane 1.1 parts.

[0042] The preparation method of the ammonia-free low-allergy essential oil composition for dyeing hair comprises the following steps: mixing coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil and squalane.

[0043] Comparative Example 1

[0044] Comparative Example 1 provides an ammonia-free low-allergy essential oil composition for dyeing hair, which is composed of the following components by mass fraction: sea buckthorn fruit oil 30 parts, camellia seed oil 20 parts, and squalane 50 parts.

[0045] The preparation method of the ammonia-free low-allergy essential oil composition for dyeing hair comprises the following steps: uniformly mixing sea buckthorn fruit oil, camellia seed oil and squalane.

[0046] Comparative Example 2

[0047] Comparative Example 2 provides an ammonia-free low-irritation essential oil composition for dyeing hair, consisting of the following components in mass parts: coconut oil 90 parts, camellia seed oil 1.1 part, argania spinosa kernel oil 1.1 part, macadamia seed oil 1.1 part, jojoba seed oil 1.1 part, squalane 1.1 part.

[0048] The preparation method of the ammonia-free low-irritation essential oil composition for dyeing hair, comprising the following steps: mixing coconut oil, camellia seed oil, argania spinosa kernel oil, macadamia seed oil, jojoba seed oil, squalane to obtain.

[0049] Comparative Example 3

[0050] Comparative Example 3 provides an ammonia-free low-irritation essential oil composition for dyeing hair, consisting of the following components in mass parts: coconut oil 90 parts, camellia seed oil 1.1 part, grape seed oil 1.1 part, macadamia seed oil 2.2 parts, jojoba seed oil 0 part, squalane 1.1 part.

[0051] The preparation method of the ammonia-free low-irritation essential oil composition for dyeing hair, comprising the following steps: mixing coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, squalane to obtain.

[0052] Comparative Example 4

[0053] Comparative Example 4 provides an ammonia-free low-irritation essential oil composition for dyeing hair, consisting of the following components in mass parts: coconut oil 90 parts, camellia seed oil 1.1 part, grape seed oil 2.2 parts, macadamia seed oil 0 part, jojoba seed oil 1.1 part, squalane 1.1 part.

[0054] The preparation method of the ammonia-free low-irritation essential oil composition for dyeing hair, comprising the following steps: mixing coconut oil, camellia seed oil, grape seed oil, jojoba seed oil, squalane to obtain.

[0055] Comparative Example 5

[0056] Comparative Example 5 provides an ammonia-free low-irritation essential oil composition for dyeing hair, consisting of the following components in mass parts: olea europaea fruit oil 90 parts, camellia seed oil 1.1 part, grape seed oil 1.1 part, macadamia seed oil 1.1 part, jojoba seed oil 1.1 part, squalane 1.1 part.

[0057] The preparation method of the ammonia-free low-irritation essential oil composition for dyeing hair, comprising the following steps: mixing olea europaea fruit oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil, squalane to obtain.

[0058] Comparative Example 6

[0059] Comparative Example 6 provides an ammonia-free low-sensitization essential oil composition for dyeing hair, which is composed of the following components in mass parts: coconut oil 90 parts, camellia seed oil 1.7 parts, grape seed oil 0.5 parts, macadamia seed oil 0.5 parts, jojoba seed oil 0.5 parts, and squalane 2.3 parts.

[0060] The preparation method of the ammonia-free low-sensitization essential oil composition for dyeing hair comprises the following steps: mixing coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil, and squalane, and obtaining the mixture.

[0061] Comparative Example 7

[0062] Comparative Example 7 provides an ammonia-free low-sensitization essential oil composition for dyeing hair, which is composed of the following components in mass parts: coconut oil 40 parts, camellia seed oil 10.1 parts, grape seed oil 10.1 parts, macadamia seed oil 10.1 parts, jojoba seed oil 10.1 parts, and squalane 10.1 parts.

[0063] The preparation method of the ammonia-free low-sensitization essential oil composition for dyeing hair comprises the following steps: mixing coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil, and squalane, and obtaining the mixture.

[0064] Application Example 1

[0065] Application Example 1 provides a hair dyeing product, which comprises a hair dyeing paste and a color developing cream.

[0066] The hair dyeing paste comprises, by mass percentage, the ammonia-free low-sensitization essential oil composition of Example 1 9.55%, cetearyl alcohol 8.5%, ethanolamine 6%, ceteth-25 2%, dicetearyl phosphate 0.245%, ceteareth-10 phosphate 0.455%, fragrance 0.5%, ascorbic acid 0.4%, toluene-2,5-diamine sulfate 0.5%, disodium EDTA 0.2%, p-aminophenol 0.3%, 4-chlororesorcinol 0.6%, 2-methylresorcinol 0.2%, 4-amino-2-hydroxymethylphenol 0.15%, 1-hydroxyethyl-4,5-diaminopyrazole sulfate 0.55%, 2,4-diaminophenoxyethanol hydrochloride 0.05%, m-aminophenol 0.27%, and water to make up the balance to 100%.

[0067] The preparation method of the hair dyeing paste comprises the following steps:

[0068] The cetearyl alcohol, ceteth-25, dicetearyl phosphate, and ceteareth-10 phosphate are put into an oil pan and stirred at 80°C until completely dissolved to obtain an oil phase.

[0069] Water, toluene-2, 5-diamine sulfate, p-aminophenol, 4-chlororesorcinol, 2-methylresorcinol, 4-amino-2-hydroxytoluene, 1-hydroxyethyl-4, 5-diaminopyrazole sulfate, 2, 4-diaminophenoxyethanol hydrochloride, m-aminophenol, disodium EDTA, ascorbic acid were put into the emulsifying pot, and stirred at 80℃ until completely dissolved;

[0070] The oil phase was put into the emulsifying pot under stirring condition, and stirred for 15 min;

[0071] Cooling to 45℃, adding the ammonia-free low-sensitivity essential oil composition of Example 1, mixing with ethanolamine and essence, stirring for 20 min, and cooling to room temperature to obtain the product.

[0072] The raw materials of the color developing cream include, by mass percentage, hydrogen peroxide 6%, cetyl stearyl alcohol 3.5%, cetyl stearyl alcohol polyether-25 1.5%, hydroxyethylidene diphosphonic acid 0.18%, xanthan gum 0.2%, disodium hydrogen phosphate 0.15%, sodium stannate 0.1%, glycerol stearate 1%, glycerol 3%, and water to make up the balance to 100%.

[0073] The preparation method of the color developing cream comprises the following steps:

[0074] Cetyl stearyl alcohol, cetyl stearyl alcohol polyether-25, and glycerol stearate were put into the oil pot, and stirred at 80℃ until completely dissolved to obtain the oil phase;

[0075] Hydrogen peroxide and water were mixed at a mass ratio of 1:1 to obtain an aqueous hydrogen peroxide solution;

[0076] Hydroxyethylidene diphosphonic acid and water were mixed at a mass ratio of 1.5:1 to obtain an aqueous hydroxyethylidene diphosphonic acid solution;

[0077] Disodium hydrogen phosphate, sodium stannate, xanthan gum, glycerol, and the remaining water were put into the emulsifying pot, mixed, heated to 80℃, and the oil phase was added under stirring condition, and stirred for 15 min;

[0078] Cooling to 55℃, adding the aqueous hydroxyethylidene diphosphonic acid solution, mixing, and stirring uniformly;

[0079] Cooling to 40℃, adding the aqueous hydrogen peroxide solution, mixing, stirring uniformly, and cooling to room temperature to obtain the product.

[0080] Application Example 2

[0081] Application Example 2 provides a hair dyeing product, which comprises a hair dyeing paste and a color developing cream.

[0082] The difference between Application Example 1 and Application Example 2 is that the ammonia-free low-sensitivity essential oil composition of Example 1 is replaced by the ammonia-free low-sensitivity essential oil composition of Example 2 of the same mass; the rest is the same.

[0083] Application Example 3

[0084] Application Example 3 provides a hair dyeing product including a hair dyeing paste and a developer cream;

[0085] The difference from Application Example 1 is only that the ammonia-free low-sensitization essential oil composition of Example 1 is replaced with the same amount of the ammonia-free low-sensitization essential oil composition of Example 3; the rest is the same.

[0086] Application Example 4

[0087] Application Example 4 provides a hair dyeing product including a hair dyeing paste and a developer cream;

[0088] The difference from Application Example 1 is only that the ammonia-free low-sensitization essential oil composition of Example 1 is replaced with the same amount of the ammonia-free low-sensitization essential oil composition of Example 4; the rest is the same.

[0089] Comparative Application Example 1

[0090] Comparative Application Example 1 provides a hair dyeing product including a hair dyeing paste and a developer cream;

[0091] The difference from Application Example 1 is only that the ammonia-free low-sensitization essential oil composition of Example 1 is replaced with the same amount of the ammonia-free low-sensitization essential oil composition of Comparative Example 1; the rest is the same.

[0092] Comparative Application Example 2

[0093] Comparative Application Example 2 provides a hair dyeing product including a hair dyeing paste and a developer cream;

[0094] The difference from Application Example 1 is only that the ammonia-free low-sensitization essential oil composition of Example 1 is replaced with the same amount of the ammonia-free low-sensitization essential oil composition of Comparative Example 2; the rest is the same.

[0095] Comparative Application Example 3

[0096] Comparative Application Example 3 provides a hair dyeing product including a hair dyeing paste and a developer cream;

[0097] The difference from Application Example 1 is only that the ammonia-free low-sensitization essential oil composition of Example 1 is replaced with the same amount of the ammonia-free low-sensitization essential oil composition of Comparative Example 3; the rest is the same.

[0098] Comparative Application Example 4

[0099] Comparative Application Example 4 provides a hair dyeing product including a hair dyeing paste and a developer cream;

[0100] The difference from Application Example 1 is only that the ammonia-free low-sensitization essential oil composition of Example 1 is replaced with the same amount of the ammonia-free low-sensitization essential oil composition of Comparative Example 4; the rest is the same.

[0101] Comparative Application Example 5

[0102] Comparative Application Example 5 provides a hair dyeing product comprising a hair dyeing paste and a color developing cream;

[0103] The difference from Application Example 1 is only that the ammonia-free low-irritation essential oil composition of Example 1 is replaced by the ammonia-free low-irritation essential oil composition of Comparative Example 5 in the same quality; the rest is the same.

[0104] Comparative Application Example 6

[0105] Comparative Application Example 6 provides a hair dyeing product comprising a hair dyeing paste and a color developing cream;

[0106] The difference from Application Example 1 is only that the ammonia-free low-irritation essential oil composition of Example 1 is replaced by the ammonia-free low-irritation essential oil composition of Comparative Example 6 in the same quality; the rest is the same.

[0107] Comparative Application Example 7

[0108] Comparative Application Example 7 provides a hair dyeing product comprising a hair dyeing paste and a color developing cream;

[0109] The difference from Application Example 1 is only that the ammonia-free low-irritation essential oil composition of Example 1 is replaced by the ammonia-free low-irritation essential oil composition of Comparative Example 7 in the same quality; the rest is the same.

[0110] Performance test

[0111] 1. Hair dyeing irritation: 30 volunteers were selected for testing, and 2g of the hair dyeing products of Application Examples 1-4 and Comparative Application Examples 1-7 (the hair dyeing paste and the color developing cream were mixed evenly in a mass ratio of 1:1) were used for hair dyeing, and the number of people with stinging sensation was recorded after staying for 30 minutes. The irritation level was divided into four levels: no stinging sensation, slight itching, obvious stinging, and stinging sensation. The results are shown in Table 1 below.

[0112]

[0113] From the results in Table 1, it can be seen that the irritation of the hair dyeing products of Application Examples 1-4 is much smaller than that of the hair dyeing products of Comparative Application Examples 1-7, and therefore is more suitable for sensitive people;

[0114] The specific components of coconut oil, camellia seed oil, grape seed oil, macadamia nut seed oil, jojoba seed oil, and squalane in the ammonia-free low-irritation essential oil composition of Application Examples 1-4 can effectively reduce the irritation of the hair dyeing paste;

[0115] In comparison, Comparative Application Examples 1-5, due to the absence of one of the raw materials of coconut oil, grape seed oil, macadamia seed oil, or jojoba seed oil or the replacement of other raw materials, and Comparative Application Examples 6 and 7, due to the mass fraction of coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil, and squalane not being within the preferred range, the irritation of the hair dye products obtained is stronger, which is not suitable for sensitive people.

[0116] 2. Dyeing effect:

[0117] (1) The hair dye products of Application Examples 1-4 and Comparative Application Examples 1-7 (mix the hair dye paste and the color developing cream uniformly in a mass ratio of 1:1) were used to dye 3-degree real human flat hair bundles, 3 bundles per group: the hair dye products were evenly applied to the real human flat hair bundles, the amount was 1.5 times the mass of the real human flat hair bundles, and the hair dye products were left to stand for 30 min at room temperature (25°C), then washed clean and dried, and then placed in a constant temperature and humidity (25°C, 55% RH) environment for 24 h, taken out, and the L1, a1, and b1 of each group of hair bundles were detected by a spectrophotometer, and the L0, a0, and b0 of each group of hair bundles before dyeing were tested by a spectrophotometer, and the color difference ΔE1 was calculated, the calculation formula of ΔE1 is as follows:

[0118] ΔE1=[(L1-L0) 2 +(a1-a0) 2 +(b1-b0) 2 ] 1 / 2 , the larger ΔE1 is, the better the coloring effect is;

[0119] (2) Then the real human flat hair bundles were soaked in 1000 mL of shampoo (mass concentration of 5%), shaken and washed for 5 min, rinsed with water, dried, and then washed with shampoo for 20 times and 40 times, respectively, and then the L2, a2, and b2 of each group of hair bundles were detected by a spectrophotometer, and the color difference ΔE2 was calculated, the calculation formula is as follows:

[0120] ΔE2=[(L2-L1) 2 +(a2-a1) 2 +(b2-b1) 2 ] 1 / 2 , the smaller ΔE2 is, the more persistent the dyeing effect is.

[0121] The results are shown in Table 2, and the actual photos after 40 times of washing are shown in Figure 1 .

[0122] Table 2

[0123]

[0124] From the results of Table 2, it can be seen that the coloring effect and dyeing durability of the hair dyeing products of Application Examples 1-4 are obviously superior to those of Comparative Application Examples 1-7;

[0125] The coloring effect and dyeing durability of Comparative Application Examples 1-4 and 7 are all poor.

[0126] Although the dyeing durability of Comparative Application Example 5 is good, the coloring effect is poor.

[0127] Although the coloring effect of Comparative Application Example 6 is not bad, the dyeing durability is poor.

[0128] From Tables 1 and 2, it can be concluded that the coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil and squalane in the low-irritation essential oil composition for hair dyeing of the present application are indispensable, cannot be replaced conventionally, and cannot be changed arbitrarily in amount; the hair dyeing products prepared by arbitrarily changing the raw materials or the amount ratio cannot simultaneously satisfy the effects of low irritation, high coloring effect and high dyeing durability.

[0129] Finally, it should be noted that the above content is only used to illustrate the technical solutions of the present application, and is not a limitation on the protection scope of the present application. Simple modifications or equivalent replacements of the technical solutions of the present application made by those skilled in the art do not deviate from the essence and scope of the technical solutions of the present application.

Claims

1. An ammonia-free hypoallergenic essential oil composition for dyeing hair, characterized in that, The ammonia-free low-allergy essential oil composition for dyeing hair is composed of the following components in mass parts: coconut oil 70-100 parts, camellia seed oil 1-2 parts, grape seed oil 1-2 parts, macadamia seed oil 1-2 parts, jojoba seed oil 1-2 parts, and squalane 1-2 parts.

2. The hypoallergenic essential oil composition for hair dyeing according to claim 1, wherein The ammonia-free low-allergy essential oil composition for dyeing hair is composed of the following components in mass parts: coconut oil 80-100 parts, camellia seed oil 1-1.5 parts, grape seed oil 1-1.5 parts, macadamia seed oil 1-1.5 parts, jojoba seed oil 1-1.5 parts, and squalane 1-1.5 parts.

3. The hypoallergenic essential oil composition for hair dyeing according to claim 2, wherein The ammonia-free low-allergy essential oil composition for dyeing hair is composed of the following components in mass parts: coconut oil 85-95 parts, camellia seed oil 1-1.2 parts, grape seed oil 1-1.2 parts, macadamia seed oil 1-1.2 parts, jojoba seed oil 1-1.2 parts, and squalane 1-1.2 parts.

4. The hypoallergenic essential oil composition for hair dyeing according to claim 3, wherein The ammonia-free low-allergy essential oil composition for dyeing hair is composed of the following components in mass parts: coconut oil 90 parts, camellia seed oil 1.1 parts, grape seed oil 1.1 parts, macadamia seed oil 1.1 parts, jojoba seed oil 1.1 parts, and squalane 1.1 parts.

5. A process for the preparation of a low sensitization essential oil composition for hair dyeing according to any one of claims 1 to 4, characterized in that, The steps include mixing coconut oil, camellia seed oil, grape seed oil, macadamia seed oil, jojoba seed oil, and squalane to obtain the ammonia-free low-allergy essential oil composition for dyeing hair.

6. Use of the ammonia-free low-allergy essential oil composition for dyeing hair according to any one of claims 1-4 in the preparation of a hair dyeing product.

7. A hair dyeing product, characterized in that, The hair dyeing product comprises the ammonia-free low-allergy essential oil composition for dyeing hair according to any one of claims 1-4.

8. A hair dyeing product according to claim 7, characterised in that, The hair dyeing product comprises hair dyeing cream and color developing cream.

9. A hair dyeing product according to claim 8, characterised in that, The ammonia-free low-allergy essential oil composition is added to the hair dyeing cream in an amount of 8-10%. The ammonia-free low-allergy essential oil composition is added to the hair dyeing cream in an amount of 8-10%.

Images