A traditional Chinese medicine mask powder for relieving heat and soothing skin

Abstract

The application discloses a traditional Chinese medicine mask powder for relieving heat and brightening skin, and belongs to the technical field of skin care products, which is prepared from honeysuckle, fried coix seed, fried apricot kernel, pearl powder, forsythia, angelica, dandelion, gotu kola and raw licorice through drying, crushing, screening, premixing, total mixing and re-screening. The traditional Chinese medicine mask powder for relieving heat and brightening skin can relieve heat, remove dampness, regulate, moisturize and repair skin, and improve sallowness, and through control of powder particle size and mixing mode, the dispersion uniformity of each component is improved, the coarse particles, agglomerates and uneven mixing phenomenon are reduced, the mixed mask powder is more delicate and easy to spread, and thus the skin adhesion, use comfort and care stability are improved.

Description

Technical Field

[0001] This invention relates to the field of skincare technology, and in particular to a herbal, heat-clearing, soothing, brightening, and skin-rejuvenating Chinese herbal facial mask powder. Background Technology

[0003] Existing Chinese herbal facial mask powders typically involve drying, pulverizing, and sieving plant-based medicinal herbs with heat-clearing, dampness-removing, skin-moisturizing, or brightening effects, then directly mixing them in a specific ratio to form a powder. Before use, these powders are mixed with water, milk, or honey to form a paste before application. Some products, in an effort to enhance acne-removing or oil-controlling effects, often focus on using cooling and heat-clearing ingredients, while neglecting aspects such as dampness removal, skin moisturizing and repair, and improvement of dullness. There is still room for improvement in overall formulation and powder uniformity.

[0004] Existing Chinese herbal facial mask powders mostly focus on clearing heat or controlling oil, often using a variety of herbs directly pulverized and mixed. This can easily lead to dryness and tightness after use due to the high proportion of cold-natured ingredients, and it is also difficult to meet the needs of removing dampness, conditioning, moisturizing and repairing the skin, and improving dullness. At the same time, the differences in particle size and density of different powders can also easily lead to uneven mixing, clumping, and poor paste-forming properties. Summary of the Invention

[0005] The main objective of this invention is to provide a herbal, heat-clearing, soothing, brightening, and skin-rejuvenating Chinese medicine facial mask powder, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A herbal, heat-clearing, soothing, brightening, and skin-rejuvenating Chinese medicine facial mask powder, by weight, is made from the following ingredients: 1-3 parts honeysuckle, 2-5 parts roasted coix seed, 2-5 parts roasted almond, 1-3 parts pearl powder, 1-3 parts forsythia, 1-3 parts angelica, 2-5 parts dandelion, 3-8 parts centella asiatica, and 2-4 parts raw licorice.

[0007] Preferably, it is made from the following raw materials by weight: 2 parts honeysuckle, 3 parts roasted coix seed, 3 parts roasted almond, 2 parts pearl powder, 2 parts forsythia, 2 parts angelica, 3 parts dandelion, 5 parts centella asiatica and 3 parts raw licorice.

[0008] Preferably, the herbal facial mask powder is prepared by the following steps: weighing each raw material according to the weight parts, removing impurities and drying the raw materials except for pearl powder; pre-crushing and finely crushing the dried raw materials and sieving them; pre-mixing the pearl powder with some of the plant raw material powder, and then adding the remaining plant raw material powder for total mixing; re-sieving the mixed powder, and after passing the inspection, dispensing and sealing it to obtain the herbal facial mask powder.

[0009] Preferably, the drying process uses a low-temperature drying method at 40-60°C to dry the raw materials until the moisture content is no higher than 10%; the roasted Job's tears and roasted almonds are made from raw materials that have undergone pre-roasting treatment and are then directly dried or pulverized.

[0010] Preferably, the pre-crushing involves crushing the dried plant material to 20-60 mesh, followed by fine crushing or ultra-fine crushing. During the crushing process, the material temperature is controlled to be no higher than 45°C. The crushed powder is then sieved through an 80-200 mesh sieve, and the material remaining on the sieve is returned to the crushing step for further crushing.

[0011] Preferably, the finely pulverized plant raw material powder is sieved through a 100-150 mesh sieve, and more preferably through a 120 mesh sieve; the pearl powder is sieved separately and then mixed with the plant raw material powder to match the particle size of each component.

[0012] Preferably, during mixing, pearl powder is first mixed with an equal mass of plant raw material powder, and then the remaining raw material powder is gradually added using an equal-incremental mixing method for premixing for 5 to 15 minutes; then all powders are mixed together for a total mixing time of 15 to 30 minutes.

[0013] Preferably, the powder after total mixing is sieved again through an 80-150 mesh sieve, and quantitatively dispensed and sealed in a clean environment, so that the moisture content of the resulting Chinese herbal mask powder is not higher than 10%; when used, the Chinese herbal mask powder is mixed with one or more of water, milk or honey to form a paste for external skin application.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention achieves its goal by synergistically controlling the proportions of nine ingredients and the powder preparation process. This ensures that the resulting facial mask powder maintains its cooling and soothing effects while minimizing dryness and tightness caused by an overemphasis on cooling ingredients. It also caters to complex skin conditions such as oiliness, redness, roughness, and dullness. Through low-temperature drying, separate pulverization, particle size control, premixing, and incremental mixing, the dispersion uniformity of powders of different densities is improved, reducing large particles and localized agglomeration. This results in a finer, more easily spreadable paste that is less prone to clumping, thus improving skin adhesion, comfort, and stability during application. Attached Figure Description

[0015] Figure 1 This is a flowchart illustrating the overall preparation process of the traditional Chinese medicine facial mask powder of the present invention. Figure 2 This is a flowchart of the raw material pretreatment, drying, and pulverizing modules of the present invention; Figure 3 This is a flowchart of the powder sieving, premixing and total mixing modules of the present invention; Figure 4 This is a flowchart illustrating the screening, finished product processing, and usage of the present invention. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0017] This invention provides a herbal, heat-clearing, soothing, brightening, and skin-renewing Chinese medicine facial mask powder. It targets complex skin problems such as facial redness, excessive sebum secretion, recurring acne, closed comedones, dull and rough skin, and poor skin condition after acne. It combines honeysuckle, roasted coix seed, roasted almond, pearl powder, forsythia, angelica, dandelion, centella asiatica, and raw licorice. Through the synergistic effects of clearing heat and soothing, removing dampness and regulating, promoting blood circulation and nourishing the skin, moisturizing and repairing the skin, and brightening the skin tone, it achieves comprehensive conditioning of the skin condition.

[0018] The herbal heat-clearing, soothing, brightening, and skin-rejuvenating Chinese medicine facial mask powder of the present invention is made from the following raw materials by weight: 1-3 parts honeysuckle, 2-5 parts roasted coix seed, 2-5 parts roasted almond, 1-3 parts pearl powder, 1-3 parts forsythia, 1-3 parts angelica, 2-5 parts dandelion, 3-8 parts centella asiatica, and 2-4 parts raw licorice.

[0019] Centella asiatica and dandelion are the main heat-clearing, soothing, and skin-conditioning components in the compound system of this invention, used to comprehensively condition skin redness, sensitivity, and damage. Honeysuckle and forsythia work together with Centella asiatica and dandelion to further improve the heat-clearing, soothing, and skin-conditioning effects of the compound. Fried coix seed focuses on removing dampness and conditioning, and works with the aforementioned components to improve skin conditions such as damp-heat accumulation and excessive sebum secretion.

[0020] Roasted almonds have the effect of moisturizing and nourishing the skin and improving the skin feel. When combined with heat-clearing herbal ingredients, they can improve the dryness and tightness that may occur after using heat-clearing herbal powder alone, while maintaining the compound heat-clearing and conditioning effect. Angelica focuses on promoting blood circulation, nourishing the skin and improving dull skin tone. Pearl powder helps to improve the delicate skin feel and brightening effect after using the powder. Raw licorice is used to harmonize the compatibility between various herbal ingredients, so that the whole formula forms a compound system that combines clearing, moisturizing, benefiting, revitalizing and harmonizing.

[0021] This invention, through the compounding of the above nine ingredients, makes the formula not simply focused on clearing heat, but also takes into account dampness removal, blood circulation and skin nourishment, skin repair, moisturizing and brightening on the basis of clearing heat and soothing. Thus, it can comprehensively regulate problems such as excessive oil, redness, dullness and roughness, and poor skin condition after acne.

[0022] In the preparation process, this invention employs separate processing, crushing, and grading methods based on the physical properties of different raw materials to reduce the problem of uneven particle size caused by simultaneous crushing of raw materials with different hardness, fiber content, and oil content. By controlling the material temperature during the crushing process, adhesion and agglomeration caused by excessive temperature rise during crushing can be reduced.

[0023] Since there are certain differences in density and physical properties between pearl powder and plant raw material powder, the present invention preferably premixes pearl powder with some plant raw material powder first, then gradually adds the remaining powder in equal increments, and finally mixes them together to improve the dispersion uniformity of different components in the composite powder system.

[0024] The roasted Job's tears and roasted almonds used in this invention are raw materials that have undergone pre-roasting treatment. The roasted Job's tears and roasted almonds can be finished roasted raw materials that meet the requirements for use. When their moisture content is sufficient for pulverization, they can be directly pulverized; when the moisture content of the raw materials is high, they can be further dried under low-temperature conditions before pulverization.

[0025] In the preparation process of the herbal facial mask powder of this invention, honeysuckle, roasted coix seed, roasted almond, pearl powder, forsythia, angelica, dandelion, centella asiatica, and raw licorice are weighed according to the formula ratio. Except for pearl powder, each plant material is selected and impurities are removed. For plant materials requiring cleaning, surface moisture is drained promptly after cleaning, and each is then dried at low temperature.

[0026] The low-temperature drying temperature is 40-60℃, and the moisture content of the plant raw materials to be crushed is no more than 10% through drying, thereby meeting the requirements of subsequent crushing and mixing. The dried plant raw materials are pre-crushed to a mesh size of 20-60 mesh, and then the pre-crushed raw materials are finely crushed or ultra-finely crushed, with the material temperature controlled not to exceed 45℃ during the crushing process.

[0027] The finely pulverized plant powder is sieved through an 80-200 mesh sieve, and the material remaining on the sieve is returned to the corresponding pulverizing process for further pulverization. Preferably, the plant raw material powder is sieved through a 100-150 mesh sieve, and more preferably through a 120 mesh sieve. Pearl powder is sieved separately to ensure that the particle size of the pearl powder matches that of the plant raw material powder to be mixed.

[0028] During the mixing process, pearl powder is first initially mixed with an equal mass of plant raw material powder, and then the remaining plant raw material powder is gradually added in equal increments for premixing for 5 to 15 minutes; then all the powders are mixed together for 15 to 30 minutes.

[0029] The mixed powder is then sieved again through an 80-150 mesh sieve to reduce powder agglomeration during the mixing process. After sieving, the powder undergoes quality inspection and is quantitatively dispensed and sealed in a clean environment to ensure that the moisture content of the resulting herbal facial mask powder does not exceed 10%.

[0030] The herbal facial mask powder prepared by this invention can be mixed with one or more of water, milk, or honey to form a paste that can be evenly applied to the skin before external use. The specific amount of mixing medium added can be adjusted according to the actual liquid absorption state of the powder and the required consistency.

[0031] Example 1: This example is used to prepare a herbal heat-clearing, soothing, brightening and rejuvenating Chinese medicine facial mask powder. By weight, 1 kg of honeysuckle, 2 kg of stir-fried coix seed, 2 kg of stir-fried almond, 1 kg of pearl powder, 1 kg of forsythia, 1 kg of angelica, 2 kg of dandelion, 3 kg of centella asiatica and 2 kg of raw licorice are weighed.

[0032] First, honeysuckle, forsythia, angelica, dandelion, centella asiatica, and raw licorice were selected and impurities removed. Roasted coix seed and roasted almonds were prepared using pre-roasted raw materials. The plant materials requiring drying were then placed at 40℃ for low-temperature drying, ensuring that the moisture content of each plant material did not exceed 10%.

[0033] The dried plant materials are pre-crushed to 20 mesh, and then finely crushed. During the crushing process, intermittent crushing or other temperature control measures are adopted to ensure that the material temperature does not exceed 45℃.

[0034] The pulverized plant material powders are sieved through an 80-mesh sieve, with the material remaining on the sieve returned to the pulverizing process for further grinding. Pearl powder is sieved separately to ensure its particle size matches that of the plant material powders.

[0035] Take 1 kg of pearl powder and 1 kg of raw licorice powder and mix them initially. Then, gradually add the remaining plant raw material powders in equal increments and premix for 5 minutes. After premixing, mix all the powders together for a total mixing time of 15 minutes.

[0036] The mixed powder was sieved again through an 80-mesh sieve, then quality was checked, and quantitative dispensing and sealing were carried out in a clean environment to obtain the herbal heat-clearing, soothing, brightening and skin-rejuvenating Chinese medicine facial mask powder described in this embodiment.

[0037] This embodiment uses the lower limit combination of dosages within the formulation range of this invention, and also employs the corresponding lower limit parameters for drying temperature, pre-pulverized particle size, fine pulverized sieve particle size, pre-mixing time, and total mixing time. Under the above conditions, each raw material can be successfully dried, pulverized, sieved, and uniformly mixed, and the resulting powder can be formulated and applied externally.

[0038] From the perspective of compatibility, this embodiment fully preserves the heat-clearing and soothing system composed of Centella asiatica, dandelion, honeysuckle and forsythia, and retains the dampness-removing, conditioning, skin-improving and compatibility system formed by roasted coix seed, roasted almond, angelica, pearl powder and raw licorice, thereby maintaining the complete technical concept of the nine-herb compound of the present invention.

[0039] Example 2: This example is used to prepare a preferred formula of herbal heat-clearing, soothing, brightening and skin-renewing Chinese medicine facial mask powder. By weight, 2kg of honeysuckle, 3kg of roasted coix seed, 3kg of roasted almond, 2kg of pearl powder, 2kg of forsythia, 2kg of angelica, 3kg of dandelion, 5kg of centella asiatica and 3kg of raw licorice are weighed.

[0040] In this embodiment, the plant materials that need to be dried are dried at a low temperature of 50°C to ensure that the moisture content of the materials is not higher than 8%. Each plant material is pre-crushed to a mesh size of 40, and then finely crushed. During the crushing process, the material temperature is controlled to be no higher than 45°C. The finely crushed plant materials are then sieved through a 120-mesh sieve, and the material that remains on the sieve is returned to the corresponding crushing process for further crushing.

[0041] Pearl powder was sieved separately. 2 kg of pearl powder was initially mixed with 2 kg of raw licorice powder. Then, honeysuckle powder, forsythia powder, angelica powder, roasted coix seed powder, roasted almond powder, dandelion powder, and centella asiatica powder were gradually added in equal increments for 10 minutes. After premixing, all powders were then mixed together for 20 minutes. The resulting composite powder was then sieved again through a 120-mesh sieve. Other raw material processing, quality inspection, packaging, and sealing steps were the same as in Example 1.

[0042] This embodiment is a preferred embodiment of the present invention. In this embodiment, the relative dosage of Centella asiatica is relatively high, and it is used in combination with dandelion for clearing heat, soothing, and conditioning damaged skin; honeysuckle and forsythia assist in clearing heat; and roasted coix seed is used for removing dampness, thus providing comprehensive conditioning for oily skin and damp-heat type skin conditions.

[0043] Roasted almonds are used to moisturize and nourish the skin and improve the skin feel after applying powder externally. Angelica is used to promote blood circulation, nourish the skin, and improve dull skin tone. Pearl powder helps to improve the fineness of the powder, the skin feel, and the brightening effect. Raw licorice is used to harmonize the compatibility between the components, thus forming a compound conditioning system that combines heat-clearing and soothing, dampness removal and conditioning, blood circulation and skin nourishment, barrier repair, and skin moisturizing and brightening.

[0044] This embodiment uses a 120-mesh powder system, which produces a finer powder compared to coarser plant powders. This facilitates uniform mixing of different components and promotes uniform preparation and coating during application. Furthermore, the use of pearl powder premixing and incremental mixing reduces the possibility of uneven distribution between pearl powder and plant powders due to differences in density and physical properties.

[0045] Example 3: This example is used to prepare a herbal heat-clearing, soothing, brightening and rejuvenating Chinese medicine facial mask powder. By weight, 3 kg of honeysuckle, 5 kg of stir-fried coix seed, 5 kg of stir-fried almond, 3 kg of pearl powder, 3 kg of forsythia, 3 kg of angelica, 5 kg of dandelion, 8 kg of centella asiatica and 4 kg of raw licorice are weighed.

[0046] In this embodiment, the plant materials that need to be dried are dried at a low temperature of 60°C to ensure that the moisture content of each plant material is not higher than 10%. Each plant material is pre-crushed to a mesh size of 60, and then finely crushed or ultra-finely crushed. During the crushing process, the material temperature is controlled to be no higher than 45°C.

[0047] The finely pulverized plant materials are sieved through a 200-mesh sieve, and the material remaining on the sieve is returned to the pulverizing process for further grinding. Pearl powder is sieved separately. 3 kg of pearl powder and 3 kg of raw licorice powder are initially mixed, and then the remaining plant material powders are gradually added in equal increments, and premixed for 15 minutes.

[0048] After premixing, all powders are then mixed for a total mixing time of 30 minutes. The resulting composite powder is then sieved again using a 150-mesh sieve. Other raw material processing, quality inspection, packaging, and sealing steps are the same as in Example 1.

[0049] This embodiment uses the upper limit combination of the formulation range of the present invention, while also covering the corresponding upper limit values ​​of major process parameters such as drying temperature, pre-pulverized particle size, fine pulverized sieve particle size, premixing time, and total mixing time.

[0050] Since the Centella asiatica, dandelion, honeysuckle, forsythia, stir-fried coix seed, stir-fried almond, angelica, pearl powder and raw licorice in this embodiment are still within the range of compound relationships determined by this invention, they can still form a compound technology system that combines heat-clearing and soothing, dampness-removing and conditioning, skin moisturizing and nourishing, blood-activating and skin-nourishing, and skin brightening.

[0051] Using finer powder particles can further improve the fineness of the powder, but as the particle size decreases, the specific surface area of ​​the powder increases, making it more prone to moisture absorption and agglomeration. Therefore, this embodiment combines premixing, extending the total mixing time, repeated sieving, and sealed packaging with a finer particle size powder preparation process to improve the uniformity and storage stability of the composite powder system.

[0052] Example 4: This example is used to prepare a different ratio of herbal heat-clearing, soothing, brightening and skin-rejuvenating Chinese herbal facial mask powder. By weight, 1.5 kg of honeysuckle, 2.5 kg of stir-fried coix seed, 3.5 kg of stir-fried almond, 1.5 kg of pearl powder, 2.5 kg of forsythia, 1.5 kg of angelica, 3.5 kg of dandelion, 4.5 kg of centella asiatica and 2.5 kg of raw licorice are weighed.

[0053] In this embodiment, the plant raw materials that need to be dried are dried at a low temperature of 45°C to ensure that the moisture content of the raw materials is not higher than 10%. Each plant raw material is pre-crushed to 30 mesh and then finely crushed. During the crushing process, the material temperature is controlled not to exceed 45°C. The finely crushed plant raw material powder is sieved through a 100-mesh sieve, and the pearl powder is sieved separately.

[0054] Take all the pearl powder and an equal mass of raw licorice powder for preliminary mixing, then gradually add the remaining powder in equal increments, premixing for 8 minutes. Perform a final mixing of all the premixed powders for a total mixing time of 18 minutes; then sieve the final mixed powder through a 100-mesh sieve. Other raw material processing, quality inspection, packaging, and sealing steps are the same as in Example 1.

[0055] This embodiment illustrates that by adjusting the specific amounts of each raw material within the formula range of this invention and using 100-mesh sieving conditions, a uniform, fine, and easy-to-prepare composite herbal mask powder can also be obtained.

[0056] This embodiment maintains the heat-clearing and soothing properties of Centella asiatica, dandelion, honeysuckle, and forsythia, and through the synergistic combination of stir-fried coix seed, stir-fried almond, angelica, pearl powder, and raw licorice, the formula takes into account the effects of removing dampness, moisturizing the skin, promoting blood circulation and nourishing the skin, and brightening the complexion.

[0057] Example 5: This example is used to prepare another herbal heat-clearing, soothing, brightening and skin-renewing Chinese medicine facial mask powder with a different ratio. By weight, 2.5 kg of honeysuckle, 4 kg of roasted coix seed, 2.5 kg of roasted almond, 2.5 kg of pearl powder, 1.5 kg of forsythia, 2.5 kg of angelica, 2.5 kg of dandelion, 6 kg of centella asiatica and 3.5 kg of raw licorice are weighed.

[0058] In this embodiment, based on the actual moisture content of the raw materials, the plant materials that need to be dried are dried at a low temperature of 55°C to ensure that the moisture content of the plant materials is not higher than 10%. The dried plant materials are then pre-crushed to 50 mesh and then finely crushed, with the material temperature controlled to be no higher than 45°C during the crushing process.

[0059] The obtained plant raw material powder was sieved through a 150-mesh sieve, and the pearl powder was sieved separately. First, the pearl powder was mixed with an equal mass of raw licorice powder, and then the remaining plant raw material powder was gradually added in equal increments, and premixed for 12 minutes.

[0060] All premixed powders were then subjected to final mixing for 25 minutes. After final mixing, the powders were sieved again through a 150-mesh sieve. Other raw material processing, quality inspection, packaging, and sealing procedures were the same as in Example 1.

[0061] This embodiment uses a 150-mesh powder particle size system, further illustrating that the present invention has multiple possible implementations within the preferred powder particle size range of 100-150 mesh. By combining separate crushing, separate sieving, pearl powder premixing, equal incremental mixing, and overall mixing processes, raw material powders from different sources, with different densities, and with different physical properties can form a relatively uniform composite powder system.

[0062] When using the herbal facial mask powder prepared in the above embodiments, an appropriate amount of water can be added to mix it according to the needs of use, so that the powder forms a uniform paste that can be applied to the skin surface before use. Alternatively, milk can be used as a mixing medium to mix the herbal facial mask powder into a uniform paste before use. Another option is to use a mixture of honey and water as a mixing medium; first, dilute the honey appropriately, then gradually add the herbal facial mask powder while stirring until a paste suitable for application is formed. Depending on the actual needs of use, two or three of the following can be used as mixing mediums: water, milk, and honey. The specific mixing amount should be adjusted according to the actual absorption state of the facial mask powder and the required coating consistency.

[0063] As can be seen from the above embodiments, the present invention uses nine raw materials, namely honeysuckle, stir-fried coix seed, stir-fried almond, pearl powder, forsythia, angelica, dandelion, centella asiatica and raw licorice, to formulate a combination of heat-clearing and soothing components, dampness-removing and conditioning components, moisturizing components, blood-activating and skin-nourishing components and harmonizing components, so that the resulting Chinese herbal facial mask powder can take into account multiple functions such as heat-clearing and soothing, dampness-removing and conditioning, skin moisturizing and nourishing, improving skin dullness and enhancing skin smoothness.

[0064] Meanwhile, the present invention adopts a preparation method of low-temperature drying, separate crushing, particle size control, pearl powder premixing, equal incremental mixing, total mixing and double sieving, which is conducive to improving the mixing uniformity between different herbal powders, making the obtained mask powder easier to prepare and uniformly apply, and reducing the adverse effects of coarse particles and powder agglomeration on the skin feel.

[0065] In the above embodiments, Embodiment 1 and Embodiment 3 respectively adopt the two endpoint values ​​of the raw material ratio range of the present invention, Embodiment 2 adopts the preferred formula of the present invention, and Embodiments 4 and 5 further adopt different ratios within the range, and specifically implement the preferred powder particle size conditions such as 100 mesh and 150 mesh, thereby providing a specific implementation basis for the raw material ratio range and preparation process parameters of the present invention.

[0066] To verify the technical effects of the herbal facial mask powders with different proportions and the optimized preparation process of the present invention, the herbal facial mask powders prepared in Examples 1 to 5 were used as the experimental group, and comparative examples 1 to 3 were set up. Among them, comparative example 1 was based on the formula of Example 2 without the addition of roasted coix seed, and the other raw materials and preparation steps were the same as those in Example 2; comparative example 2 was based on the formula of Example 2 without the addition of roasted almond and raw licorice, and the other raw materials and preparation steps were the same as those in Example 2; comparative example 3 used the exact same raw material composition and proportion as Example 2, but all plant raw materials were uniformly pulverized to 60 mesh and directly mixed with pearl powder, without pearl powder premixing, equal incremental mixing and re-sieving.

[0067] First, the powder properties of Examples 1 to 5 and Comparative Example 3 were tested. 100g of each sample was randomly taken from each group, and samples were randomly taken 10 times from the top, middle, bottom, and different locations of the sample. The calcium content introduced by the pearl powder was used as the evaluation index for mixing uniformity. The calcium content at each sampling point was measured, and the relative standard deviation (RSD) was calculated. The lower the RSD, the better the mixing uniformity. Another 10g sample was taken, 15mL of purified water was added, and the mixture was stirred at the same speed for 60s. After standing for 3 minutes, obvious agglomerates with a particle size greater than 2mm were collected, and the agglomeration rate was calculated. An equal amount of the mixed paste sample was placed in the center of a horizontal glass plate, covered with a glass plate of the same specification, and a 500g load was applied for 60s. The average spreading diameter of the paste was measured. Simultaneously, 10 evaluators scored the fineness of the mixed powder, with a full score of 10 points. The average score was taken, and the results are shown in Table 1.

[0068] Table 1: Powder performance test results of each embodiment and process comparison example As shown in Table 1, the mixing uniformity RSD of Examples 1 to 5 is all below 5%, and the blending agglomeration rate is 2.7% to 5.8%, which is significantly better than that of Comparative Example 3, which uses 60-mesh coarse powder for direct mixing. In particular, Example 2, after using a combination of 120-mesh sieving, pearl powder premixing, equal incremental mixing, total mixing, and re-sieving, has a mixing uniformity RSD of 3.1%, a blending agglomeration rate reduced to 2.7%, and an average spreading diameter of 14.6 cm. This indicates that by controlling the powder particle size and mixing powders of different densities and physical properties in stages, the local aggregation of pearl powder and plant powder can be reduced, resulting in a more uniform and delicate powder mixture with better spreading performance.

[0069] Although Comparative Example 3 used the same raw material composition and ratio as Example 2, it significantly increased the mixing uniformity RSD and agglomeration rate, and significantly decreased the average spreading diameter and fineness score, because it directly mixed 60-mesh coarse powder without premixing and re-sieving. This demonstrates that the low-temperature treatment, separate pulverization, particle size control, pearl powder premixing, equal-incremental mixing, and re-sieving processes of this invention work together to improve the mixing uniformity of the composite herbal powder, reduce coarse particles and local agglomeration, and make the mask powder easier to prepare into a uniform paste during use.

[0070] Further evaluation of skin condition was conducted on Examples 1 to 5 and Comparative Examples 1 to 3. Eighty adult subjects with excessive sebum secretion, mild facial redness, or dull skin were randomly divided into 8 groups of 10 each. During the trial, the subjects maintained their original basic cleansing habits and did not change to skincare products with obvious oil-controlling, exfoliating, or whitening effects.

[0071] Each group took 10g of the corresponding facial mask powder, added 15mL of purified water to form a uniform paste, and applied it evenly to the facial skin for 15 minutes each time, 3 times a week for 4 consecutive weeks. Before the start of the experiment and after 4 weeks of continuous use, skin oil content, skin redness index, stratum corneum moisture content, and skin brightness were measured under the same environmental conditions. The number of subjects who experienced significant dryness or tightness after use was also recorded. The reduction rate of oil content, the reduction rate of redness index, and the increase rate of stratum corneum moisture content were calculated based on the measured values ​​before and after the experiment. Skin brightness was expressed as the change in L* value before and after the test. The results are shown in Table 2.

[0072] Table 2. Skin usage evaluation results for each embodiment and comparative example. As shown in Table 2, Examples 1 to 5 all showed varying degrees of decrease in oil content, decrease in redness index, increase in stratum corneum moisture content, and improvement in skin brightness. Among them, Example 2 showed the best overall performance, with a reduction rate of 31.7% in oil content, a reduction rate of 24.8% in redness index, an increase rate of 21.5% in stratum corneum moisture content, and a skin brightness L* of 4.3, without any obvious dryness or tightness.

[0073] In Comparative Example 1, which did not include roasted Job's tears, the redness index, stratum corneum moisture content, and skin brightness were still improved to some extent, but the oil content reduction rate decreased to 14.2%, which was significantly lower than that in Example 2. This indicates that when roasted Job's tears are combined with components such as Centella asiatica, dandelion, honeysuckle, and forsythia, it is beneficial to enhance the comprehensive conditioning effect of the composition on the condition of skin with excessive oil secretion. This allows the present invention to further address both heat-clearing and soothing while also addressing dampness removal and oil condition conditioning.

[0074] Comparative Example 2, without the addition of roasted almonds and raw licorice, still showed a certain decrease in oil content and redness index, but the increase in stratum corneum moisture content was only 7.3%, and the incidence of significant dryness and tightness reached 40%, significantly higher than in the other examples. This result indicates that when heat-clearing and dampness-removing ingredients are used together, the moisturizing and skin-nourishing effects of roasted almonds and the synergistic effect of raw licorice on the overall compound are beneficial in mitigating the dryness and tightness that may occur after solely emphasizing heat-clearing and dampness-removing properties, allowing the entire formula to achieve a more balanced skin feel while maintaining its heat-clearing and soothing effects.

[0075] Comparative Example 3 used the same raw material composition and ratio as Example 2, only changing the pulverization and mixing methods. All skin condition evaluation indicators were lower in Comparative Example 3 than in Example 2. Combined with the powder performance results in Table 1, it can be seen that when the powder particle size is coarse and powders of different densities are not premixed and mixed in equal increments, problems such as uneven mixing, local clumping, and decreased spreadability are easily generated, thus affecting the uniformity of mixing and the contact state with the skin surface. Therefore, the powder preparation process of this invention not only improves the uniformity and fineness of the powder itself, but also facilitates a more uniform contact state of the herbal facial mask powder during mixing and external application.

[0076] In summary, the results show that the combination of honeysuckle, roasted coix seed, roasted almond, pearl powder, forsythia, angelica, dandelion, centella asiatica and raw licorice in this invention results in a Chinese herbal facial mask powder that does not only have a single heat-clearing or oil-controlling effect, but also reduces oil content and improves redness while also improving skin hydration and skin tone brightness.

[0077] Among them, Examples 1 and 3 are located at the lower and upper limits of the protection scope of the formula of this invention, respectively, and their evaluation results are better than those of the corresponding comparative examples or maintain a good overall performance. Example 2 adopts the preferred formula and preferred process parameters, and its overall performance is better. Examples 4 and 5 are located within the range of the formula and process parameters of this invention, and also show good overall conditioning effects. This shows that the raw material composition, ratio range and powder preparation process determined by this invention can work together to make the obtained Chinese herbal facial mask powder form a relatively balanced overall effect in terms of clearing heat and soothing, regulating oil state, reducing dryness and tightness, improving skin texture and brightening skin tone.

[0078] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A herbal, heat-clearing, soothing, brightening, and skin-rejuvenating traditional Chinese medicine facial mask powder, characterized in that: By weight, it is made from the following ingredients: 1-3 parts honeysuckle, 2-5 parts roasted coix seed, 2-5 parts roasted almond, 1-3 parts pearl powder, 1-3 parts forsythia, 1-3 parts angelica, 2-5 parts dandelion, 3-8 parts centella asiatica, and 2-4 parts raw licorice.

2. The herbal heat-clearing, soothing, brightening, and skin-rejuvenating traditional Chinese medicine facial mask powder according to claim 1, characterized in that, By weight, it is made from the following ingredients: 2 parts honeysuckle, 3 parts roasted coix seed, 3 parts roasted almond, 2 parts pearl powder, 2 parts forsythia, 2 parts angelica, 3 parts dandelion, 5 parts centella asiatica and 3 parts raw licorice.

3. The herbal heat-clearing, soothing, brightening, and skin-rejuvenating traditional Chinese medicine facial mask powder according to claim 1, characterized in that, The herbal facial mask powder is prepared by the following steps: weigh each raw material according to the weight parts, and remove impurities and dry the raw materials except for pearl powder; pre-crush and finely crush the dried raw materials and sieve them; pre-mix the pearl powder with some of the plant raw material powder, and then add the remaining plant raw material powder for total mixing; The mixed powder is sieved again, and after passing the inspection, it is packaged and sealed to obtain the Chinese herbal facial mask powder.

4. The herbal heat-clearing, soothing, brightening, and skin-rejuvenating traditional Chinese medicine facial mask powder according to claim 3, characterized in that, The drying process employs a low-temperature drying method at 40–60°C until the moisture content of the raw materials is no higher than 10%. The roasted Job's tears and roasted almonds are made from raw materials that have undergone pre-roasting treatment and are then directly dried or pulverized.

5. The herbal heat-clearing, soothing, brightening, and skin-rejuvenating traditional Chinese medicine facial mask powder according to claim 3, characterized in that, The pre-crushing process involves crushing the dried plant material to 20-60 mesh, followed by fine crushing or ultra-fine crushing. During the crushing process, the material temperature does not exceed 45°C. The crushed powder is then sieved through an 80-200 mesh sieve, and the material remaining on the sieve is returned to the crushing step for further crushing.

6. The herbal heat-clearing, soothing, brightening, and skin-rejuvenating traditional Chinese medicine facial mask powder according to claim 5, characterized in that, The finely pulverized plant raw material powder is sieved through a 100-150 mesh sieve, preferably through a 120 mesh sieve; the pearl powder is sieved separately and then mixed with the plant raw material powder to match the particle size of each component.

7. The herbal heat-clearing, soothing, brightening, and skin-rejuvenating traditional Chinese medicine facial mask powder according to claim 3, characterized in that, When mixing, first mix pearl powder with an equal mass of plant raw material powder, then gradually add the remaining raw material powder using an equal-increment mixing method for premixing for 5-15 minutes; then mix all the powders together for 15-30 minutes.

8. The herbal heat-clearing, soothing, brightening, and skin-rejuvenating traditional Chinese medicine facial mask powder according to claim 3, characterized in that, The powder after total mixing is sieved again through an 80-150 mesh sieve, and quantitatively dispensed and sealed in a clean environment. The resulting Chinese herbal facial mask powder has a moisture content of no more than 10%. When used, it can be mixed with one or more of water, milk or honey to form a paste for external skin application.

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