Dioscorea cirrhosa and river mud assisted hair dye and application method thereof

Abstract

The invention discloses a dye with dye-assisted dye by dioscorea cirrhosa and river mud and an application method thereof.The dye is prepared by taking a dioscorea cirrhosa extracting solution as a dyeing agent and river mud as a dyeing assistant, fully soaking bleached or natural white hair in the dioscorea cirrhosa extracting solution, enabling the dioscorea cirrhosa extracting solution to be in full contact with the hair, then heating the mixture at 40-50 DEG C for 30-50 min, and after the mixture is completely soaked in the dye-assisted dye by the river mud, taking out the dye-assisted dye by the river mud. After heating is finished, river mud is evenly smeared on the hair surface, standing is conducted for 40 min, then cleaning is conducted with clear water, air drying is conducted, and the hair is naturally black and has the luster feeling. The prepared hair dye is lasting and stable in dyeing effect, safe in component and free of any adverse effect on the human body.

Description

Technical Field

[0001] This invention relates to the field of natural hair dye technology, specifically to a hair dye using yam and river mud as auxiliary dyes and its application method. Background Technology

[0002] In recent years, the demand for hair dye has been increasing, making it one of the fastest-growing consumer products in the cosmetics industry. Currently, hair dyes sold on the market can be categorized by their ingredients into inorganic hair dyes (metallic hair dyes), synthetic hair dyes (oxidative hair dyes), and plant-based hair dyes (natural hair dyes), with inorganic and synthetic hair dyes being the most widely used. While traditional chemical hair dyes can provide long-lasting and vibrant hair color, satisfying people's pursuit of beauty, the harmful chemicals they contain, such as p-phenylenediamine, hydrogen peroxide, and ammonia, pose a significant potential threat to human health. These chemicals may not only cause short-term adverse reactions such as skin allergies and scalp irritation, but may also lead to more serious long-term health problems, such as increased cancer risk and endocrine system disorders. Therefore, in today's health-conscious world, finding a hair dye material that is both safe and environmentally friendly, while also ensuring health, has become a hot topic of common concern in the scientific research and beauty industries.

[0003] Natural hair dyes primarily consist of ingredients extracted from natural plants, causing no primary irritation to the hair or skin allergies. From an environmental perspective, residual natural pigments after dyeing do not require special treatment to meet emission standards, and these pigments are biorenewable resources that are biodegradable and non-toxic. Research on natural plant-based hair dyes has gradually become a focus of attention for many scientists and consumers, and is increasingly becoming a future trend in the hair dye market. However, the dyeing effects of existing natural hair dyes are not yet satisfactory, with major problems including poor color retention, poor durability (requiring re-dyeing), and high cost. Furthermore, the composition of natural plant-derived hair dyes is not fully understood, and research on hair dyes and dyeing processes is still in the experimental stage, resulting in poor coloring stability and a high dependence on the skills and process control of the dyeing personnel.

[0004] Dioscorea cirrhosa Lour., also known as bloodwort, cinnabar yam, mountain yam, and cinnabar lotus, is a perennial vine belonging to the Dioscoreaceae family. Mature yam tubers contain a large amount of bright reddish-brown sap. When cut, the cross-section is a bright reddish-brown with a regular reticulated pattern, interspersed with yellow spots and markings. Rich in natural pigments, it provides valuable material for plant dyeing. The main components of yam tuber sap include polyphenols, starch, amino acids, mucilage, and sugars. Polyphenols, such as condensed tannins, have significant medicinal value, possessing antibacterial and detoxifying effects. Furthermore, yam tubers are rich in amino acids and minerals, which together give yam tubers their unique medicinal and dyeing properties.

[0005] Based on this, the present invention uses high-purity yam powder as a dye and river mud as a dyeing aid to conduct plant dyeing experiments, aiming to explore in depth the dyeing effect of yam dye and river mud on natural hair, in order to develop a more natural, safe and healthy plant hair dyeing material and method. Summary of the Invention

[0006] In view of the above shortcomings, the present invention provides a safe, natural, and healthy plant-based hair dye and its application method. The present invention is achieved through the following technical means:

[0007] This invention first discloses a hair dye using yam and river mud as auxiliary dyes, comprising:

[0008] Dioscorea bulbifera extract was used as the dye, and river mud was used as the auxiliary dye; wherein:

[0009] The Dioscorea bulbifera extract was prepared by the following method:

[0010] Cut the yam into small pieces, add water as the extraction solvent at a material-to-liquid ratio of 1:2, thoroughly crush and mix in a homogenizer, let stand for a period of time, and then filter with gauze to obtain the yam extract.

[0011] This invention also discloses a method for applying a hair dye using yam and river mud as dyeing aids, comprising:

[0012] Method 1: Completely soak the gray hair in yam extract and rub it thoroughly for a period of time. Then heat it. After heating, evenly apply river mud to the hair surface, leave it for 40 minutes, rinse with water, and blow-dry. Or

[0013] Method 2: Soak the gray hair completely in yam extract and rub it thoroughly for a period of time. Then, apply river mud evenly to the surface of the hair and heat it. After heating, wash it with clean water and blow-dry it.

[0014] Furthermore, the gray hair mentioned is bleached hair, while the gray hair is natural gray hair.

[0015] Furthermore, the bleached hair is bleached hair with a bleaching level of 9.

[0016] Furthermore, the thorough kneading time is 5-6 minutes.

[0017] Furthermore, the heating conditions described in Method 1 are: heating at 50°C for 40-50 minutes.

[0018] Furthermore, the heating conditions described in Method 2 are: heating at 50°C for 30-50 minutes.

[0019] This invention also discloses the application of a hair dye aided by yam and river mud in the dyeing of fiber materials.

[0020] Furthermore, the fiber material includes, but is not limited to, Xiangyun yarn.

[0021] The beneficial effects of this invention are as follows:

[0022] The dyeing principle of Dioscorea opposita is mainly based on the chemical reaction between its natural pigment components, such as tannins, and cellulose and protein fibers. During the dyeing process, the pigment components in Dioscorea opposita can penetrate into the fiber interior and form strong chemical bonds with the fiber components, thereby achieving the dyeing effect. This chemical reaction not only makes the dyeing effect long-lasting and stable but also gives Dioscorea opposita dyes a wide range of adaptability to various fiber materials. Taking Xiangyun yarn as an example, in the production process of Xiangyun yarn, after the silk fabric is repeatedly soaked, brushed, and oxidized with Dioscorea opposita juice, a dense protective film forms on the surface. Then, the fabric is coated with river mud, where organic matter, metal ions, and mineral particles combine to form aggregated colloids. These aggregated colloids combine with Dioscorea opposita pigments, and the iron and aluminum ions in the river mud act as mediators to combine with carboxyl and amino groups in the organic matter and phenolic hydroxyl groups in the Dioscorea opposita pigments, respectively, ultimately causing the aggregated colloids to firmly adhere to the fabric surface. In addition, some free metal ions in the river mud continuously migrate into the fabric. When they migrate to the yam pigment deposition layer, the phenolic hydroxyl groups on the condensed tannin molecules of yam complex with them, so that the molecules are connected to each other through the metal ions, and finally form a cross-linked network structure, which makes the silk fabric appear glossy black or brown. Attached Figure Description

[0023] Figure 1 The effect of oxidative dyeing agent treatment on the hair dyeing performance of Dioscorea opposita;

[0024] Figure 2 The effect of river mud as a dyeing aid on the hair dyeing performance of Dioscorea opposita;

[0025] Figure 3 The effects of different concentrations of Dioscorea bulbifera extract and dyeing time on hair dyeing;

[0026] Figure 4 To investigate the effects of different dyeing processes on the hair dyeing performance of yam + river mud. Detailed Implementation

[0027] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0028] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items. The invention is further described below with reference to specific embodiments, and the advantages and features of the invention will become clearer as the embodiments are described. However, the embodiments are merely exemplary in nature and do not constitute any limitation on the scope of the invention.

[0029] Example 1

[0030] A hair dye using yam and river mud as facilitators includes:

[0031] Dioscorea bulbifera extract was used as the dye, and river mud was used as the auxiliary dye; wherein:

[0032] The Dioscorea bulbifera extract was prepared by the following method:

[0033] Cut the yam into small pieces, add water as the extraction solvent at a material-to-liquid ratio of 1:2, thoroughly crush and mix in a homogenizer, let stand for a period of time, and then filter with gauze to obtain the yam extract.

[0034] The river mud is a slurry-like river mud sourced from Shunde District, Foshan City, Guangdong Province. It requires no prior treatment and can be used directly.

[0035] Application Example 1

[0036] Soak the bleached hair (any commercially available hair bleach will do, including naturally gray hair) in yam extract and rub it thoroughly for 5-6 minutes to ensure the extract is fully in contact with the bleached hair. Then heat it at 50°C for 40-50 minutes. After heating, apply river mud evenly to the hair surface, let it sit for 40 minutes, then rinse it with clean water and let it air dry. The hair will then appear naturally black with a glossy finish.

[0037] Application Example 2

[0038] Soak bleached hair (any commercially available hair bleach will do, including naturally gray hair) in yam extract and rub thoroughly for 5-6 minutes to ensure the extract is fully absorbed. Then, evenly apply river mud to the hair surface and heat at 50°C for 30-50 minutes. After heating, rinse thoroughly with water and air dry. The hair will then appear naturally black with a glossy finish.

[0039] Test case

[0040] (1) Effect of different auxiliary dyes on the coloring effect of Dioscorea opposita hair dye. First, bleached hair was treated with different concentrations of Dioscorea opposita extract. Then, oxidative auxiliary dye and river mud were evenly applied to the treated bleached hair. Then, three sets of water bath temperatures were set to heat the bleached hair. Finally, the coloring effect of oxidative auxiliary dye and river mud on Dioscorea opposita hair dye was observed.

[0041] (2) Effects of Dioscorea bulbifera extract concentration and dyeing time on coloring effect. Bleached hair was first treated with different concentrations of Dioscorea bulbifera extract, and then river mud was evenly applied to the treated bleached hair. Under the premise of a water bath temperature of 50℃, four sets of water bath times were set and the bleached hair was treated. Finally, the dyeing effect was compared and the optimal concentration of Dioscorea bulbifera extract and dyeing time were determined.

[0042] (3) Effects of different hair dyeing processes on the coloring effect of Dioscorea bulbifera extract. Two different hair dyeing processes were adopted. One was dyeing before mordant treatment, in which the hair was first soaked in Dioscorea bulbifera extract to bleach it, and then coated with river mud and heated in a water bath. The other was mordant treatment, in which the bleached hair was directly treated with a mixture of Dioscorea bulbifera and river mud in a certain proportion and then heated in a water bath. Finally, the effects of dyeing before mordant treatment and mordant treatment on the coloring effect of Dioscorea bulbifera extract were observed.

[0043] Experimental protocol

[0044] Preparation of Dioscorea opposita extract

[0045] Weigh a certain amount of Dioscorea bulbifera, cut it into small pieces, use water as the extraction solvent, and put it into a homogenizer at material-to-liquid ratios of 1:2, 1:3 and 1:6 respectively to fully crush and mix, and process to obtain Dioscorea bulbifera pulp. After standing for a period of time, filter it with gauze to obtain Dioscorea bulbifera extract for later use.

[0046] An Investigation into the Dyeing Effects of Oxidative Auxiliaries and River Mud as Auxiliaries

[0047] Treatment Method 1: Divide the prepared bleached hair into 12 groups and immerse them in 1:3 and 1:6 ratios of yam extract, respectively, and rub them thoroughly for a period of time to ensure full contact between the yam extract and the bleached hair for even dyeing. Then, take 3 groups of hair immersed in 1:3 yam extract and 3 groups immersed in 1:6 yam extract, apply river mud to the hair surface, place them in test tubes, and set 3 temperatures: 30℃ (room temperature), 40℃, and 60℃. Heat the tubes in a water bath for 30 minutes, then rinse thoroughly with clean water and air dry. Treat the hair with the oxidative auxiliary dye in the same way. After obtaining the treated hair, observe its dyeing condition and effect.

[0048] Table 1 Experimental Design in Treatment 1

[0049]

[0050] An Investigation into the Effects of Dioscorea opposita Extract Concentration and Hair Dyeing Time on Coloring Effect

[0051] Treatment Method 2: Divide the prepared bleached hair into 8 groups and immerse them in yam extract solutions with a ratio of 1:2 and 1:3, respectively. Rub the hair thoroughly for a period of time to ensure complete contact between the extract and the bleached hair, resulting in even dyeing. Then, apply river mud to the surface of the hair, place each group into test tubes, and bathe them at 50℃ for different times (30 min, 40 min, 50 min, 60 min). After the water bath, rinse thoroughly with clean water and allow to air dry.

[0052] Table 2 Experimental Design in Treatment 2

[0053]

[0054] Research on pre-dyeing followed by mordant dyeing and co-bath mordant dyeing processes

[0055] Treatment Method 3: Divide the prepared bleached hair into 4 groups. Take two groups and use the pre-dyeing and post-mordant method. Immerse them in yam extract and rub them thoroughly for a period of time to ensure that the yam extract is in full contact with the bleached hair. Then place them in test tubes and bathe them in a water bath at 50℃ for 40 minutes and 50 minutes respectively. After the water bath, apply river mud evenly to the surface of the hair, let it stand for 40 minutes, then rinse it with clean water and let it air dry. Take the other two groups and use the same bath mordant method. Mix yam and river mud in a 1:2 ratio to ensure that the homogenate is in full contact with the bleached hair. Then place them in test tubes and bathe them in a water bath at 50℃ for 40 minutes and 50 minutes respectively. After the water bath, rinse them with clean water and let them air dry.

[0056] Table 3 Experimental Design in Treatment 3

[0057]

[0058] Experimental Results and Analysis

[0059] Effects of Oxidative Auxiliary Dye Treatment on the Hair Dyeing Performance of Dioscorea bulbifera

[0060] Bleached hair was soaked in 1:6 and 1:3 diluted dioscorea bulbifera extract solutions, respectively. Then, commercially available dyeing auxiliaries were added, and the hair was heated at 30℃, 40℃, and 60℃ for 30 minutes each. After rinsing with water and drying, the hair color was observed. The results are as follows: Figure 1 As shown, hair treated with oxidative dyeing agents turns golden, similar to the color of untreated bleached hair. Furthermore, the hair color remains unchanged regardless of concentration or temperature, indicating low dyeing performance.

[0061] The effect of river mud as a dyeing aid on the hair dyeing performance of Dioscorea opposita

[0062] Bleached hair was soaked in 1:6 and 1:3 diluted dioscorea extracts, respectively, and then river mud was added. The hair was then heated at 30℃, 40℃, and 60℃ for 30 minutes each. After rinsing with clean water and drying, the hair color was observed. The results are as follows: Figure 2 As shown in the figure. The results indicate that, with the aid of river mud, different dilutes of Dioscorea bulbifera and different temperatures can all deepen the hair color. However, at a material-to-liquid ratio of 1:3 and a treatment temperature of 60℃, the dyeing effect of bleached hair is the best, resulting in a darker color that is closer to black compared to other concentrated treatment groups. This suggests that both temperature and the concentration of Dioscorea bulbifera extract have an impact on the hair dyeing effect.

[0063] Effects of different concentrations of Dioscorea opposita extract and dyeing time on hair coloring

[0064] Of the above results, the best dyeing effect was achieved using river mud as a dyeing aid at a 1:3 material-to-liquid ratio and a treatment temperature of 60℃. However, the difference in dyeing effect was not significant at treatment temperatures of 40℃ and 60℃. Considering that the heating temperature for hair dyeing in practical applications could not reach 60℃, an intermediate value was chosen between these two temperatures. The water bath temperature set in treatment 2 was 50℃. (However, the difference in dyeing effect was not significant when heating at 40-60℃, and considering that the heating temperature for hair dyeing in practical applications could not reach 60℃, we further narrowed the range to 40-50℃, and the water bath temperature set in treatment 2 was 50℃.) The concentration of Dioscorea bulbifera extract was also increased to explore the optimal time for heating Dioscorea bulbifera water to bleach hair. The results are shown in the figure. The figure shows that under the conditions of a 50℃ water bath and a 1:2 ratio of Dioscorea bulbifera extract, the optimal heating time for Dioscorea bulbifera water was 60 minutes. However, overall, at higher water bath temperatures, the color difference between samples treated at different times with the same concentration was not significant. For detailed results, please refer to [link to detailed results]. Figure 3 .

[0065] The Influence of Different Dyeing Processes on the Hair Dyeing Performance of Dioscorea bulbifera + River Mud

[0066] Based on a comparative study of assisted dyeing methods, treatment three employed two different approaches: pre-dyeing followed by mordant treatment and simultaneous mordant treatment in the same bath. The results showed that pre-dyeing followed by mordant treatment was superior to simultaneous mordant treatment. Therefore, in practical applications, plant-based hair dyeing can adopt a pre-dyeing followed by mordant treatment process. For detailed results, please see [link to results]. Figure 4 .

[0067] In conclusion, hair and silk both belong to the protein fiber family, with keratin as their basic building block, and exhibit striking similarities in their microstructure—both possessing unique flexibility and elastic recovery capabilities. This commonality provides a natural biological basis for cross-disciplinary technological innovation. Inspired by the national intangible cultural heritage "Xiangyunsha Dyeing and Finishing Techniques," we have for the first time introduced "yam," the core medium of traditional silk dyeing, into the field of hair dyeing and care, thus beginning our exploration of new natural plant-based hair dyeing processes.

[0068] Initially, we used only Dioscorea opposita extract as a dye for direct staining without adding any auxiliaries. The results showed that this direct staining method resulted in poor colorfastness and short-lasting color. Figure 1 As shown in Figure ⑧, the hair color after dyeing is light orange, which is closer to the color of the yam extract itself. We then added two different auxiliaries: an oxidizing auxiliary, which had a moderate dyeing effect, still leaning towards the color of the yam extract; and river mud as an auxiliary, which had a significant dyeing effect, turning the bleached hair from yellow to black. This is because the oxidizing auxiliary and river mud work on different principles. The tannins in the yam extract react with the iron ions in the river mud to form a black substance. This black complex then enters the cuticle or cortex of the hair, resulting in a uniform black color. Therefore, river mud was chosen as the auxiliary.

[0069] After determining that river mud was the optimal dyeing agent, we adopted different hair dyeing processes. Among them, the process of dyeing first and then mordant was the best. Therefore, we determined that the process of dyeing first and then mordant for yam plant hair dyeing was the optimal one. This process involves immersing bleached hair in yam extract and rubbing it thoroughly for a period of time to ensure that the yam extract is in full contact with the bleached hair. Then, the hair is heated at 50°C for 50 minutes. After heating, river mud is evenly applied to the surface of the hair. After leaving it for 40 minutes, it is rinsed clean with water and dried. The hair then appears as a natural black color with a glossy finish.

Claims

1. A hair dye using yam and river mud as facilitators, comprising: Dioscorea bulbifera extract was used as the dye, and river mud was used as the auxiliary dye; wherein: The Dioscorea bulbifera extract was prepared by the following method: Cut the yam into small pieces, add water as the extraction solvent at a material-to-liquid ratio of 1:2, thoroughly crush and mix in a homogenizer, let stand for a period of time, and then filter with gauze to obtain the yam extract.

2. A method for applying a hair dye using yam and river mud as auxiliary dyes according to claim 1, comprising: Method 1: Completely soak the gray hair in yam extract and rub it thoroughly for a period of time. Then heat it. After heating, evenly apply river mud to the hair surface, leave it for 40 minutes, rinse with water, and blow-dry. Or Method 2: Soak the gray hair completely in yam extract and rub it thoroughly for a period of time. Then, apply river mud evenly to the surface of the hair and heat it. After heating, wash it with clean water and blow-dry it.

3. The application method according to claim 2, wherein: The white hair mentioned is bleached hair, while the white hair mentioned is natural white hair.

4. The application method according to claim 3, wherein: The bleached hair is bleached to a level 9.

5. The application method according to claim 2, wherein: The kneading process should be carried out for 5-6 minutes.

6. The application method according to claim 2, wherein: The heating conditions described in Method 1 are: heating at 50°C for 40-50 minutes.

7. The application method according to claim 2, wherein: The heating conditions described in Method 2 are: heating at 50°C for 30-50 minutes.

8. The application of a hair dyeing agent using yam and river mud as aids according to claim 1 in the dyeing of fiber materials.

9. The application according to claim 8, wherein: The fiber material is Xiangyun yarn.

Images