Traditional Chinese medicine patch for conditioning yin-deficiency constitution as well as preparation method and application of traditional Chinese medicine patch

Abstract

The invention discloses a traditional Chinese medicine patch for conditioning yin deficiency constitution and preparation and application of the traditional Chinese medicine patch, the traditional Chinese medicine patch comprises, by weight, 5-10 g of chrysanthemum, 6-9 g of folium mori and other medicinal materials which are compatible with one another, and the effects of nourishing yin and clearing heat are achieved together. The preparation method comprises the steps of medicinal material screening treatment, low-temperature crushing, mixing and stirring, packaging and the like, so that effective components of medicinal materials are scientifically and rigorously reserved. During use, 2-6 patches are selected to be applied to corresponding acupuncture points according to symptoms, about 6 hours are taken each time, and 5 days are taken as a course of treatment. The traditional Chinese medicine patch can be used for preparing medicines for treating insomnia, constipation, hyperthyroidism and other diseases, and clinical cases show that the traditional Chinese medicine patch can effectively improve yin deficiency related symptoms. The external application mode avoids the defect of oral administration, and a new effective way is provided for conditioning the constitution with yin deficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of traditional Chinese medicine, specifically, to a traditional Chinese medicine patch for conditioning yin-deficient constitution, its preparation method and application. Background Art

[0002] In traditional Chinese medicine's theory of constitution, yin-deficient constitution is a common constitution type that has many impacts on human health. Relevant medical research data shows that the population with yin-deficient constitution occupies a certain proportion in the total population, and with the acceleration of the pace of life, environmental changes, and the influence of bad lifestyles, the number of this group is on the rise. People with yin-deficient constitution often show typical symptoms such as hot hands and feet, dry mouth and throat, slightly dry nose, preference for cold drinks, dry stools, red tongue with little fluid, and thready and rapid pulse. At the same time, such people are mostly irritable, extroverted and active. Especially during the change of seasons, especially in summer, they are extremely vulnerable to the invasion of summer heat, heat, and dryness evils, resulting in aggravated physical discomfort and seriously affecting the quality of life.

[0003] Currently, there are various conditioning methods for yin-deficient constitution on the market, but each has significant defects. Although the traditional oral Chinese medicine decoction can play the role of nourishing yin and clearing heat, its taste is bitter and astringent, making it difficult for many people, especially children and those sensitive to taste, to keep taking it. Boiling Chinese medicine decoction requires a lot of time and energy, and for people in modern fast-paced life, it is extremely difficult to keep boiling and taking the decoction for a long time. In addition, oral medications are absorbed through the gastrointestinal tract, and some people will have gastrointestinal discomfort symptoms such as nausea, vomiting, and abdominal pain, which not only affect the efficacy of the drugs but may also cause damage to the digestive system.

[0004] Although there are some products in the health care product market claiming to be able to condition yin-deficient constitution, most of these health care products have unclear ingredients and lack rigorous clinical verification, and cannot accurately and effectively solve various problems caused by yin-deficient constitution. Their efficacy often lacks scientific basis, making it difficult for consumers to use them with confidence.

[0005] Non-drug conditioning means such as acupuncture and massage, although having a certain conditioning effect, rely on professional operation and have strict requirements for the venue and time. Patients need to go to medical institutions frequently, which not only increases the time and economic costs but also makes it difficult to ensure daily continuous conditioning. Moreover, the treatment frequency and course arrangement of acupuncture and massage are relatively strict, and it is very difficult for busy modern people to follow them for a long time and ensure the treatment effect.

[0006] In view of the many deficiencies of the existing conditioning methods, developing a product for conditioning yin-deficient constitution that is convenient to use, has definite effects, has few side effects and is suitable for the modern life rhythm has become an urgent problem to be solved. The traditional Chinese medicine patch for conditioning yin-deficient constitution of the present invention is proposed based on solving the above problems, aiming to provide a more convenient and effective conditioning method for people with yin-deficient constitution. Summary of the Invention

[0007] The object of the present invention is to solve the disadvantages existing in the prior art, and a traditional Chinese medicine patch for conditioning yin-deficient constitution is proposed. By weight, the drug composition of the traditional Chinese medicine patch includes: 5-10 g of chrysanthemum, 6-9 g of mulberry leaf, 5-9 g of prunella vulgaris, 2-5 g of raw licorice, 5-9 g of glossy privet fruit, 6-9 g of mulberry branch, 2-5 g of lophatherum gracile, and 5-9 g of mulberry fruit.

[0008] Preferably, by weight, the drug composition of the traditional Chinese medicine patch includes: 6 g of chrysanthemum, 7 g of mulberry leaf, 6 g of prunella vulgaris, 3 g of raw licorice, 6 g of glossy privet fruit, 7 g of mulberry branch, 3 g of lophatherum gracile, and 6 g of mulberry fruit.

[0009] A method for preparing the traditional Chinese medicine patch for conditioning yin-deficient constitution as claimed in claim 1, comprising the following steps: S1, raw material pretreatment: Select chrysanthemum, mulberry leaf, prunella vulgaris, raw licorice, glossy privet fruit, mulberry branch, lophatherum gracile, and mulberry fruit in the weight ratio to remove impurities and ensure the purity of the raw materials; S2, drying treatment: Place the pretreated raw materials in a drying device and dry them at a temperature of 40-50 °C for 5-8 hours to make the moisture content of the raw materials lower than 8%, which is convenient for subsequent grinding; S3, primary grinding: Put the dried raw materials into a common grinder for primary grinding until the particle size reaches 80-100 mesh; S4, fine grinding: Transfer the powder obtained from the primary grinding to an ultrafine grinder for further grinding until the particle size reaches 200-300 mesh to increase the surface area of the drug and improve the release rate of the active ingredients; S5, mixing and stirring: Pour the powders of each medicine after fine grinding into a mixing and stirring machine and stir at a speed of 100-150 revolutions per minute for 15-20 minutes to ensure that the powders are fully and evenly mixed; S6, packaging: Pack the evenly mixed powder into a non-woven fabric bag with good air permeability and meeting the hygienic standards for sealed packaging to make the yin-deficient patch.

[0010] Preferably, the drying device in the drying treatment process of step S2 adopts a vacuum drying oven. By controlling the vacuum degree at 0.05-0.08 MPa, the drying speed is accelerated and the active ingredients of the drug are better retained.

[0011] Preferably, during the primary grinding and fine grinding processes of step S3 and step S4, the grinding equipment needs to be intermittently cooled to prevent the loss of drug components caused by heat generated during grinding. Each cooling time is 5-10 minutes, and the interval grinding time is 20-30 minutes.

[0012] Application of a traditional Chinese medicine patch for conditioning yin-deficiency constitution, where the traditional Chinese medicine patch is used for treating insomnia, constipation, dry cough, hyperthyroidism, diabetes, hypertension, pulmonary tuberculosis, Sjogren's syndrome, and menopausal syndrome.

[0013] A method for using a traditional Chinese medicine patch for conditioning yin-deficiency constitution, comprising the following steps: Preparation before application: Clean the skin of the area to be applied with warm water to ensure that the skin surface is free of dirt and grease, and then gently dry it with a clean and soft towel; Prepare 2 - 6 patches of the traditional Chinese medicine patch according to claim 1 according to your own situation. Selection of application acupoints: Select corresponding acupoints according to different symptoms; For insomnia symptoms, Shenmen acupoint, Neiguan acupoint, and Sanyinjiao acupoint can be selected; For constipation, Tianshu acupoint and Zhigou acupoint are selected; For those with dry cough, Feishu acupoint, Chize acupoint, etc. can be applied; Apply one patch of the traditional Chinese medicine patch to each corresponding acupoint. Application operation: Take out the traditional Chinese medicine patch from the package, gently remove the anti-sticking layer, align the center of the patch with the selected acupoint, and gently press to ensure that the patch fits tightly with the skin, avoiding wrinkles or air bubbles that may affect drug absorption. Control of application time: Apply for about 6 hours each time, and closely observe the skin condition during this period; If itching, stinging, redness or other discomfort symptoms occur on the skin during the application process, immediately remove the traditional Chinese medicine patch, and decide whether to continue using it according to the severity of the skin reaction; If the skin reaction is mild, the next application time can be appropriately shortened after the symptoms are relieved; If the reaction is severe, stop using it and consult a doctor. Care after application: After removing the traditional Chinese medicine patch, do not wash the application area immediately to avoid rubbing the skin; If the local skin shows slight redness, it generally can subside on its own; If blisters, breakage or other conditions occur, keep the local area clean and dry to avoid infection, and seek medical attention in time if necessary.

[0014] Preferably, the yin-deficiency constitution is manifested as one or more of the following: hot hands and feet, dry mouth and throat, slightly dry nose, preference for cold drinks, dry stools, red tongue with little fluid, thready and rapid pulse, irritable temper, extroverted, active, lively, prone to consumptive diseases, seminal emission, insomnia, etc., being susceptible to heat transformation when infected, being tolerant of winter but not summer, and being intolerant of summer heat, dryness and pathogenic dryness.

[0015] Preferably, the conditioning course is one course every 5 days. After each course is completed, according to the improvement of your own symptoms, rest for 1 - 2 days, and then decide whether to carry out the conditioning of the next course.

[0016] Preferably, when using the traditional Chinese medicine patch, it is necessary to avoid certain foods, including alcohol and spicy and stimulating foods, and the diet should be light.

[0017] Compared with the existing technology, the beneficial effects of the present invention are: Significant conditioning effect: Through the delicate compatibility of multiple Chinese herbal medicines, it can effectively nourish yin and clear heat, reduce fire by nourishing yin, disperse lung heat, nourish blood and yin, with the advantage of nourishing yin without harming yang; it has an obvious conditioning effect on various symptoms and diseases caused by yin deficiency constitution. Clinical cases show that this Chinese herbal medicine patch can significantly improve symptoms such as insomnia, constipation, and dry mouth, bringing practical health improvements to people with yin deficiency constitution.

[0018] Convenient to use: Adopting the method of external application, it avoids the bitterness of oral medications and gastrointestinal irritation, and is suitable for all types of people. Users can apply the patch at any time during daily activities according to their own situations, without complex operations and professional guidance, greatly improving the convenience and compliance of conditioning.

[0019] Scientific preparation process: In the preparation process, steps such as screening, low-temperature pulverization, precise mixing and stirring, and encapsulation maximize the retention of the effective components of the medicinal materials, ensuring the quality and stability of the Chinese herbal medicine patch. The standardized preparation process is conducive to large-scale production and quality control.

[0020] Wide range of applications: It is not only applicable to people with typical yin deficiency constitution, but also can be used to treat various diseases related to yin deficiency, such as insomnia, constipation, dry cough, hyperthyroidism, diabetes, etc., providing a new option for clinical treatment. Brief description of the drawings

[0021] Figure 1 It is a schematic flow chart of a preparation method of a Chinese herbal medicine patch for conditioning yin deficiency constitution proposed by the present invention. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Referring to the figure, this embodiment provides a Chinese herbal medicine patch for conditioning yin deficiency constitution. By weight, the drug composition of the Chinese herbal medicine patch includes: 5-10 g of chrysanthemum, 6-9 g of mulberry leaf, 5-9 g of prunella vulgaris, 2-5 g of raw licorice, 5-9 g of glossy privet fruit, 6-9 g of mulberry branch, 2-5 g of lophatherum gracile, 5-9 g of mulberry fruit.

[0024] Furthermore, by weight, the drug composition of the Chinese herbal medicine patch includes: 6 g of chrysanthemum, 7 g of mulberry leaf, 6 g of prunella vulgaris, 3 g of raw licorice, 6 g of glossy privet fruit, 7 g of mulberry branch, 3 g of lophatherum gracile, 6 g of mulberry fruit.

[0025] A method for preparing the above-mentioned Chinese herbal medicine patch for conditioning yin deficiency constitution includes the following steps: S1, Raw material pretreatment: Select chrysanthemum, mulberry leaf, prunella vulgaris, raw licorice root, glossy privet fruit, mulberry branch, lophatherum gracile, and mulberry fruit in parts by weight, remove impurities, and ensure the purity of the raw materials; S2, Drying treatment: Place the pretreated raw materials in a drying equipment, dry them at a temperature of 40 - 50 °C for 5 - 8 hours to make the moisture content of the raw materials lower than 8%, which is convenient for subsequent grinding; S3, Primary grinding: Put the dried raw materials into a common grinder for primary grinding until the particle size reaches 80 - 100 mesh; S4, Fine grinding: Transfer the powder after primary grinding to an ultrafine grinder and further grind it until the particle size reaches 200 - 300 mesh to increase the surface area of the drug and improve the release rate of the active ingredients; S5, Mixing and stirring: Pour the finely ground powders of each medicine into a mixing and stirring machine and stir at a speed of 100 - 150 revolutions per minute for 15 - 20 minutes to ensure that the powders are fully and evenly mixed; S6, Sealing: Pack the evenly mixed powder into a non-woven fabric bag with good air permeability and meeting the hygiene standards, and conduct sealed packaging to make the Yin deficiency patch.

[0026] Furthermore, in the drying treatment process of step S2, the drying equipment uses a vacuum drying oven. By controlling the vacuum degree at 0.05 - 0.08 MPa, the drying speed is accelerated and the active ingredients of the drug are better retained.

[0027] Furthermore, during the primary grinding and fine grinding processes of step S3 and step S4, it is necessary to cool the grinding equipment intermittently to prevent the loss of drug components due to heat generated during grinding. Each cooling time is 5 - 10 minutes, and the interval grinding time is 20 - 30 minutes.

[0028] An application of a traditional Chinese medicine patch for conditioning Yin deficiency constitution, wherein the traditional Chinese medicine patch is applied to the treatment of insomnia, constipation, dry cough, hyperthyroidism, diabetes, hypertension, pulmonary tuberculosis, Sjogren's syndrome, and menopausal syndrome.

[0029] A method for using a traditional Chinese medicine patch for conditioning Yin deficiency constitution, comprising the following steps: Preparation before application: Use warm water to clean the skin of the area to be applied, ensure that there is no dirt or grease on the skin surface, and then gently dry it with a clean and soft towel; Prepare 2 - 6 patches of the traditional Chinese medicine patch according to your own situation as described in claim 1; Selection of application acupoints: Select corresponding acupoints according to different symptoms; for insomnia symptoms, Shenmen acupoint, Neiguan acupoint, and Sanyinjiao acupoint can be selected; for constipation, Tianshu acupoint and Zhigou acupoint can be selected; for those with dry cough, Feishu acupoint, Chize acupoint, etc. can be applied; Apply one patch of the traditional Chinese medicine patch to each acupoint; Application operation: Take out the traditional Chinese medicine patch from the packaging, gently remove the anti-adhesive layer, align the center of the patch with the selected acupoint, and gently press to ensure that the patch fits tightly against the skin, avoiding wrinkles or air bubbles that may affect drug absorption; Application time control: Apply the patch for about 6 hours each time, and closely observe the skin condition during this period; if itching, stinging, redness or other discomfort symptoms occur on the skin during the application, immediately remove the traditional Chinese medicine patch, and decide whether to continue using it according to the severity of the skin reaction; if the skin reaction is mild, after the symptoms are relieved, the next application time can be appropriately shortened; if the reaction is severe, stop using it and consult a doctor; Post-application care: After removing the traditional Chinese medicine patch, do not wash the application area immediately, and avoid rubbing the skin; if the local skin shows slight redness, it generally can subside on its own; if blisters, breakage or other conditions occur, keep the local area clean and dry to avoid infection, and seek medical attention in a timely manner if necessary.

[0030] Preferably, the yin deficiency constitution is manifested as one or more of the following: hot hands and feet, dry mouth and throat, slightly dry nose, preference for cold drinks, dry stools, red tongue with little fluid, thready and rapid pulse, irritable temper, extroverted, lively, prone to consumptive diseases, seminal emission, insomnia, etc., being susceptible to heat transformation when infected, being tolerant of winter but not summer, and being intolerant of summer heat, dryness and pathogenic factors.

[0031] Furthermore, the conditioning course is one course every 5 days. After each course is completed, according to the improvement of your own symptoms, you can rest for 1 - 2 days and then decide whether to carry out the conditioning of the next course.

[0032] Furthermore, when using the traditional Chinese medicine patch, it is necessary to avoid certain foods, including alcohol and spicy and stimulating foods, and the diet should be light.

[0033] When the above-mentioned embodiment is specifically used, First, the preparation of the traditional Chinese medicine patch: Weigh 6g of chrysanthemum, 7g of mulberry leaf, 6g of prunella vulgaris, 3g of raw licorice, 6g of glossy privet fruit, 7g of mulberry branch, 3g of lophatherum gracile, and 6g of mulberry fruit. Carefully screen the medicinal materials, remove impurities, wash and dry them. Grind the dried medicinal materials into 150 meshes at low temperature, pour them into a stirring device and stir at 120 revolutions per minute for 45 minutes. Finally, package them into traditional Chinese medicine patches for conditioning yin deficiency constitution.

[0034] Application case 1: Application for insomnia Patient Ms. Wang, 45 years old, has suffered from long-term insomnia and is diagnosed with yin deficiency constitution. Take 4 patches of traditional Chinese medicine patches every day, and apply them to the Shenmen acupoint, Neiguan acupoint, Sanyinjiao acupoint, and Baihui acupoint respectively, for 6 hours each time. Continuously use for 5 days as one course, and rest for 1 day after the course is completed. After two courses of conditioning, Ms. Wang's insomnia condition has been significantly improved and the sleep quality has been improved.

[0035] Application case 2: Application for constipation Mr. Li, 38 years old, suffered from constipation due to yin deficiency. He used 3 traditional Chinese medicine patches every day, applied to Tianshu acupoint, Zhigou acupoint, and Dachangshu acupoint, and each application lasted for 6 hours. Similarly, taking 5 days as a course of treatment, after three courses of treatment, Mr. Li's constipation problem was effectively relieved and his bowel movements returned to normal.

[0036] In the above specific embodiments, the purpose, technical solution, and beneficial effects of the present invention have been further described in detail. It should be understood that the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

[0037] In addition, in the description of the present invention, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0038] Furthermore, in the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A Chinese medicine patch for regulating Yin deficiency constitution, characterized in that: By weight, the medicinal composition of the Chinese medicine patch includes: 5-10g of chrysanthemum, 6-9g of mulberry leaf, 5-9g of selfheal, 2-5g of raw licorice, 5-9g of Ligustrum lucidum, 6-9g of mulberry branch, 2-5g of loblolly leaf, and 5-9g of mulberry fruit.

2. A Chinese medicine patch for regulating Yin deficiency constitution according to claim 1, characterized in that: By weight, the medicinal composition of the Chinese medicine patch includes: 6g of chrysanthemum, 7g of mulberry leaf, 6g of selfheal, 3g of raw licorice, 6g of Ligustrum lucidum fruit, 7g of mulberry branch, 3g of loblolly leaf, and 6g of mulberry fruit.

3. A method for preparing the Chinese medicine patch for regulating Yin deficiency constitution according to claim 1, characterized in that: The following steps are involved: S1, raw material pretreatment: select chrysanthemum, mulberry leaves, selfheal, raw licorice, Ligustrum lucidum, mulberry branches, bamboo leaves, mulberry fruits in proportion by weight to remove impurities and ensure the purity of the raw materials; S2, drying treatment: placing the pretreated raw materials in a drying device and drying them at a temperature of 40-50°C for 5-8 hours to reduce the moisture content of the raw materials to less than 8%, which is convenient for subsequent grinding; S3, initial grinding: put the dried raw materials into a common grinder for initial grinding, grinding to a particle size of 80-100 mesh; S4, fine grinding: the powder after the initial grinding is transferred to an ultrafine grinder and further ground to a particle size of 200-300 mesh to increase the surface area of ​​the drug and improve the release rate of the active ingredient; S5, mixing and stirring: pour the finely ground medicinal powders of each flavor into a mixing and stirring machine, and stir at a speed of 100-150 rpm for 15-20 minutes to ensure that the medicinal powders are fully mixed; S6, Packaging: Put the evenly mixed medicine powder into a non-woven bag with good air permeability and meeting hygiene standards, and seal it to make a Yinxu patch.

4. The method for treating Yin deficiency constitution with a Chinese medicine patch according to claim 3, characterized in that: The drying equipment in the drying process of step S2 adopts a vacuum drying oven, and by controlling the vacuum degree at 0.05-0.08MPa, the drying speed is accelerated and the active ingredients of the medicine are better retained.

5. The method for treating Yin deficiency constitution with a Chinese medicine patch according to claim 3, characterized in that: During the initial grinding and fine grinding process of step S3 and step S4, the grinding equipment needs to be intermittently cooled to prevent the loss of drug components due to heat generated by grinding. The cooling time for each time is 5-10 minutes, and the interval grinding time is 20-30 minutes.

6. An application of a Chinese medicine patch for regulating Yin deficiency constitution, characterized in that: The Chinese medicine patch is used to treat insomnia, constipation, dry cough, hyperthyroidism, diabetes, hypertension, tuberculosis, Sjögren's syndrome, and menopausal syndrome.

7. A method for using a Chinese medicine patch for regulating Yin deficiency constitution, characterized in that: The steps include: Preparation before application: Use warm water to clean the skin of the area to be applied, make sure there is no dirt or grease on the skin surface, and then gently dry it with a clean and soft towel; prepare 2 to 6 pieces of the Chinese medicine patch described in claim 1 according to your own situation; Selection of acupoints for application: Select corresponding acupoints according to different symptoms; for insomnia symptoms, Shenmen, Neiguan, and Sanyinjiao can be selected; for constipation, Tianshu and Zhigou can be selected; for dry cough, Feishu and Chize can be applied; each acupoint corresponds to a Chinese medicine patch; Application: Take the Chinese medicine patch out of the package, gently peel off the anti-sticking layer, align the center of the patch with the selected acupuncture point, and press gently to ensure that the patch fits tightly to the skin to avoid wrinkles or bubbles that affect drug absorption; Application time control: Apply for about 6 hours each time, and closely observe the skin condition during the application; if itching, stinging, redness or other discomfort symptoms occur during the application, remove the patch immediately and decide whether to continue using it based on the severity of the skin reaction; if the skin reaction is mild, the next application time can be appropriately shortened after the symptoms are relieved; If the reaction is severe, stop using and consult a doctor; Post-application care: After removing the Chinese medicine patch, do not wash the applied area immediately and avoid rubbing the skin; If slight redness appears on the local skin, it will generally disappear on its own; if blisters, damage, etc. occur, the area should be kept clean and dry to avoid infection, and seek medical attention if necessary.

8. The method for using the Chinese medicine patch for regulating Yin deficiency constitution according to claim 5, characterized in that: The Yin deficiency constitution is manifested as one or more of the following: hot palms and soles, dry mouth and throat, slightly dry nose, preference for cold drinks, dry stool, red tongue with little fluid, thin and rapid pulse, irritable temperament, extroverted and active, lively, prone to fatigue, loss of semen, insomnia and other diseases, easily transformed into heat by pathogens, resistant to winter but not summer, and intolerance to summer heat and dryness.

9. The method for using the Chinese medicine patch for regulating Yin deficiency constitution according to claim 7, characterized in that: The conditioning treatment course lasts for 5 days. After each course, you can rest for 1-2 days based on the improvement of your symptoms and then decide whether to proceed to the next course of conditioning.

10. The method for using the Chinese medicine patch for regulating Yin deficiency constitution according to claim 7, characterized in that: When using the Chinese medicine patch, you need to avoid certain foods, including alcohol and spicy foods, and your diet should be light.

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