Seven-needle method for three-dimensional bionic hairline
By employing a seven-needle technique for three-dimensional biomimetic scalp micropigmentation, combined with multi-layered color gradation and phased care, the problems of poor three-dimensionality, harsh color gradation transitions, non-standard operation, insufficient safety, and poor post-operative recovery in existing scalp micropigmentation techniques have been solved, thus improving the naturalness and safety of the scalp micropigmentation results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HANGZHOU OUHAN RONGZHUANG HEALTH MANAGEMENT CONSULTING CO LTD
- Filing Date
- 2026-04-03
- Publication Date
- 2026-06-26
AI Technical Summary
Existing scalp micropigmentation techniques suffer from problems such as poor three-dimensionality, harsh color transitions, non-standard operation, insufficient safety, and poor post-operative recovery, making it difficult to meet consumers' demands for naturalness, safety, and durability in scalp micropigmentation.
The seven-needle biomimetic scalp micropigmentation method uses seven needles clustered together with multi-layered color matching to simulate the natural growth pattern of native hair. The procedure is standardized and phased care is performed. Medical-grade pure plant pigments free of heavy metals are used to ensure the naturalness and safety of the micropigmentation effect.
It achieves a high degree of integration between the scalp micropigmentation effect and the original hair, enhancing the three-dimensionality and naturalness, reducing scalp irritation and infection risk, and ensuring the long-lasting stability and safety of the scalp micropigmentation effect.
Smart Images
Figure CN122272986A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of scalp micropigmentation technology, and in particular to a seven-needle method for three-dimensional biomimetic scalp micropigmentation. Background Technology
[0002] With the increasing demand for image management, scalp micropigmentation (SMP), a non-invasive technique that quickly improves the visual appearance of scalp and hair, is widely used to address issues such as thinning hair, receding hairlines, and alopecia areata. Traditional SMP techniques often use single or multiple needles, resulting in limited color coverage, poor layering, unnatural biomimetic effects, and an inability to mimic the clustered growth pattern of natural hair. The resulting effect is stiff and lacks integration with natural hair. Furthermore, improper post-operative care can affect color retention and lifespan.
[0003] Current scalp micropigmentation techniques suffer from unnatural color transitions, often resulting in issues such as overly dark pigments causing a bluish scalp or underly light pigments leading to rapid fading. Some pigments contain heavy metals, which, with prolonged contact with the scalp, can trigger allergies, irritation, and even damage to scalp health. Furthermore, the lack of standardized parameters for needle manipulation during the procedure and the absence of systematic, phased post-operative care guidelines contribute to poor stability of the results, long recovery periods, and risks such as infection, uneven color fading, and hair follicle damage. These shortcomings fail to meet consumers' demands for naturalness, safety, and longevity in scalp micropigmentation.
[0004] Therefore, there is an urgent need for a three-dimensional bionic hair micropigmentation method that can simulate the growth pattern of natural hair, has a natural color transition, is safe and standardized to operate, and has a good postoperative recovery effect, in order to solve the above-mentioned technical problems. Summary of the Invention
[0005] The purpose of this invention is to provide a seven-needle method for three-dimensional biomimetic scalp micropigmentation, which solves the defects of existing technologies such as poor three-dimensionality, harsh color transitions, non-standard operation, insufficient safety, and poor postoperative recovery. This invention provides a seven-needle method for three-dimensional biomimetic scalp micropigmentation, which simulates the natural growth pattern of native hair by using seven clustered needles combined with multi-layer color adjustment, thereby improving the three-dimensionality and naturalness of the micropigmentation. At the same time, it standardizes the operation process and postoperative care, reduces the risk of scalp irritation and infection, and ensures that the micropigmentation effect is long-lasting and stable.
[0006] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:
[0007] A seven-needle method for three-dimensional biomimetic hair micropigmentation includes the following steps:
[0008] S1. Pre-operative preparation: Clean and disinfect the scalp, draw the outline of the micropigmentation procedure, and determine the shape and density sections of the hairline.
[0009] S1.1 Preoperative allergy test: All pigments and anesthetics used in the operation must be applied to the skin behind the ear for allergy testing.
[0010] S1.2 Use a high-definition hair follicle detector to analyze the scalp condition, distribution and growth direction of native hair, skin color and pigmentation, and delineate the operating area;
[0011] S1.3. Based on head shape, face shape and individual needs, design the hairline shape, hair follicle density distribution and color gradation scheme;
[0012] S1.4 Apply a thin layer of topical numbing cream to the operating area for 10 minutes. After wiping off the topical numbing cream, apply additional topical numbing agent to sensitive areas. Before the operation, gently touch the scalp with a seven-needle needle to confirm that there is no stinging sensation before proceeding with the operation.
[0013] S2. Pigment Mixing: Based on skin tone and original hair color, mix at least three different shades of micropigment, namely dark, medium and light shades. The micropigment should be medical-grade pure plant pigments that do not contain heavy metals. Avoid using pure black and dark blue colors.
[0014] S3, Seven-Needle Technique: Perform the following steps sequentially: first layer basic point needling, second layer three-dimensional deepening, third layer biomimetic transition, and fourth layer random fine-tuning. Each needling technique should be performed with a 5-10 minute interval between each technique.
[0015] S3.1 First layer of basic dotting: Using a seven-needle needle dipped in intermediate color pigment, the first dotting is performed along the inner side of the hairline at a preset density. Each dotting creates a micro cluster of seven color dots. The needle is inserted vertically and withdrawn vertically, with an insertion depth of 0.5-0.8mm and a density of 150-200 dots / cm².
[0016] S3.2 Second layer of three-dimensional deepening: Replace with dark pigment, adjust the length of the center needle protrusion to be 0.2-0.4mm longer than the surrounding needles, and perform a second puncture at the center of each group of dots from the first puncture to deepen the color of the center dot. The puncture depth is 0.2-0.4mm deeper than the first time, and the same position is only deepened once.
[0017] S3.3, Third layer biomimetic transition: Replace with light-colored pigments, adjust the length of the surrounding needle protrusions to be 0.1-0.3mm longer than the central needle, and lightly prick the gaps between adjacent groups of dots to form a light-colored transition halo with a line length of 2-4mm. The line is tilted at 45-60° along the original hair flow direction to enhance the hair flow and natural growth effect.
[0018] S3.4, Fourth layer random fine adjustment: Use a single or three-needle dip into the intermediate or light color scheme to randomly add scattered dots around the dot group;
[0019] S4. Immediate Post-Operative Care: Cleanse the scalp, apply repair cream, and provide immediate protection.
[0020] S4.1 Cleaning: Gently wipe the scalp with sterile saline solution to remove excess color;
[0021] S4.2 Anti-inflammatory and color-fixing: First, apply a thin layer of anti-inflammatory scalp essence and wait 5 minutes for it to be absorbed, then apply a thin layer of special color-fixing and repairing cream.
[0022] S4.3 Immediate Protection: Wear a sterile protective cap on the scalp to avoid contact with dust and bacteria, and inform the customer not to remove it for 1 hour;
[0023] S5. Staged Postoperative Care:
[0024] S5.1. Avoid water and sweat for 1-2 days after the operation. Do not scratch your scalp and do not use any shampoo or conditioner. Avoid high temperature environments and elevate your head while sleeping to reduce scalp pressure.
[0025] S5.2. For 3-7 days after the procedure, gently rinse your scalp with warm water and use a mild, non-irritating, sulfate-free scalp care product. Let your scalp air dry after washing. Do not pick at the scabs during the scab formation period; allow the scabs to fall off naturally.
[0026] S5.3. Wash your hair normally 8-30 days after the procedure, avoiding vigorous rubbing of the treated area; apply scalp-specific sunscreen before going out to prevent pigment oxidation; do not dye or perm your hair.
[0027] S5.4. Follow-up examination 30 days after surgery. If there is local discoloration or insufficient density, local touch-up will be performed.
[0028] The beneficial effects of this invention are as follows:
[0029] 1. This invention uses a seven-needle needle for clustered dotting, with each dotting forming a micro-cluster of seven colored dots, perfectly simulating the clustered growth pattern of native hair;
[0030] By combining four-layer needle technique and three color levels, a natural transition is formed, eliminating harsh boundaries, enhancing the flow of hair, and making the micropigmentation effect highly integrated with the original hair, making it visually indistinguishable.
[0031] 3. Medical-grade pure plant pigments are used to reduce the risk of scalp irritation and allergies, while precisely controlling the needle depth, density, and needle protrusion length to avoid hair follicle damage;
[0032] 4. Postoperative staged care effectively reduces the risks of infection, discoloration, and scarring, ensuring safe and reliable operation. Attached Figure Description
[0033] Figure 1 The flowchart below shows a seven-needle method for three-dimensional biomimetic hair micropigmentation according to the present invention. Detailed Implementation
[0034] To make the content of this invention easier to understand, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings, wherein the same components are represented by the same reference numerals.
[0035] Example 1:
[0036] This embodiment provides a seven-needle method for three-dimensional bionic scalp micropigmentation, applied to a 35-year-old female subject. The subject had a warm yellow skin tone, naturally dark brown hair, a slightly receding hairline, sparse hair on the top of her head, and no history of scalp inflammation or allergies. The specific operation steps are as follows:
[0037] S1. Preoperative preparation:
[0038] S1.1 Scalp Detection and Operation Area Delineation: A high-definition hair follicle detector was used to conduct a comprehensive examination of the subject's scalp to confirm that the scalp was free of inflammation and sensitivity, the original hair was sparsely distributed, the growth direction was generally forward, the skin color was warm yellow, and there was no obvious pigmentation. The operation area was delineated from the inner side of the hairline to the middle of the top of the head.
[0039] S1.2 Personalized Design: Based on the subject's oval face shape and round head shape, a natural arc-shaped hairline was designed. The density zoning was set as follows: 200 points / cm² at the hairline, 180 points / cm² in the middle of the head, and 160 points / cm² in the transition area between the hairline and the head. The color scheme was set as dark (dark brown), medium (medium brown), and light (light brown).
[0040] S1.3 Preoperative allergy test: Apply a small amount of the medical-grade pure plant pigment (dark brown, medium brown, light brown) and topical numbing cream used in the operation to the back of the subject's ear, wait 24 hours, and observe the skin behind the ear for any allergic reactions such as redness, swelling, or itching. If no allergic reaction is observed, the subsequent operation can be performed.
[0041] S1.4. Application of anesthetic: Apply a thin layer of topical anesthetic ointment to the operating area and leave it for 10 minutes. After wiping off the anesthetic ointment, apply additional topical anesthetic to sensitive areas such as the hairline and crown of the head. After waiting for 5 minutes, gently touch the scalp with a seven-needle needle to confirm that the subject does not feel any stinging sensation before starting the formal operation.
[0042] S2. Pigment Mixing: Medical-grade pure plant pigments free of heavy metals are selected. Based on the subject's warm yellow skin and dark brown native hair, three pigments are mixed: dark chocolate brown for the dark color, milk chocolate brown for the medium color, and light brown for the light color, to ensure a natural transition between the three pigments and to blend harmoniously with the skin tone and native hair.
[0043] S3. Seven-needle technique: Use a single-headed seven-star needle (sterilized by high-pressure steam), with an 8-minute interval between each needling technique. The specific procedure is as follows:
[0044] S3.1 First layer of basic dotting: Using a seven-needle needle dipped in intermediate color (milk chocolate brown) pigment, vertically insert and withdraw the needle along the inner side of the hairline at a preset density (200 dots / cm² at the hairline, 180 dots / cm² at the middle of the top of the head, and 160 dots / cm² in the transition area), with an insertion depth of 0.6mm. Each dotting creates a micro-cluster of seven colored dots, completing the basic outline construction;
[0045] S3.2 Second layer of three-dimensional deepening: Replace with dark color (dark chocolate brown) pigment, adjust the length of the center needle protrusion to be 0.3mm longer than the surrounding needles, and perform a second dotting at the center of each dot group, with a dotting depth of 0.9mm (0.3mm deeper than the first time). Only deepen the same position once to make the center color of the dot group darker and form a three-dimensional sense of layering.
[0046] S3.3, Third layer biomimetic transition: Replace with light-colored (light brown) pigment, adjust the length of the surrounding needle protrusion to be 0.2mm longer than the central needle, lightly prick the gap between adjacent dot groups, the length of the dot line is 3mm, and it is tilted at 45° along the original hair flow direction to form a light-colored transition shadow, eliminating the harshness of the dot group boundary.
[0047] S3.4, Fourth layer random fine-tuning: Using a single needle to pick up intermediate color (milk chocolate brown) pigment, randomly add scattered dots around the dot cluster, focusing on filling in the area with insufficient density in the middle of the head, simulating the random growth state of natural hair, and improving the naturalness.
[0048] S4. Immediate Postoperative Care:
[0049] S4.1 Cleaning: Gently wipe the scalp with sterile saline solution to remove surface color and residual pigment. Be gentle and avoid rubbing the scalp.
[0050] S4.2 Anti-inflammatory and color-fixing: Apply a thin layer of anti-inflammatory scalp essence, wait 5 minutes until fully absorbed, then apply a thin layer of special color-fixing and repairing cream, evenly covering the entire treatment area;
[0051] S4.3 Immediate protection: The subject is given a sterile protective cap and informed not to remove it for one hour to avoid dust and bacteria coming into contact with the scalp.
[0052] S5. Staged Postoperative Care: Days 1-2: Instruct subjects to avoid water and sweat, refrain from scratching the scalp, and not use any shampoo or conditioner; avoid high-temperature environments such as saunas and sun exposure; elevate the head by 15cm while sleeping to reduce scalp pressure; Days 3-7: Gently rinse the scalp with lukewarm water (around 37℃) using a sulfate-free, non-irritating scalp-specific shampoo; after washing, gently pat dry with a clean towel and allow to air dry naturally, without blow-drying; do not pick at the scabs during the scab formation period; the scabs will fall off naturally 6 days post-surgery, with no pigment loss; Days 8-30: Subjects... The patient washed their hair normally, avoiding vigorous rubbing of the treated area; applied SPF30+ scalp-specific sunscreen before going out; did not dye or perm their hair; 30 days post-procedure: follow-up examination, observed with a high-definition hair follicle detector, showed good scalp recovery, no inflammation, no scarring, slight discoloration at the hairline edge, and slightly insufficient density, so local touch-up was performed. The touch-up used intermediate-toned pigments at a density of 180 dots / cm², following the seven-needle method in step S3. After the touch-up, the hair tattoo effect was even and natural, highly integrated with the original hair, with a strong three-dimensional effect, and the patient's satisfaction was high.
[0053] Example 2:
[0054] This embodiment provides a seven-needle method for three-dimensional biomimetic scalp micropigmentation, applied to a 42-year-old male subject. The subject had fair skin and naturally dark brown hair. He had a receding hairline, sparse hair on the crown, no scalp inflammation, and a history of mild allergies. The specific operation steps are as follows:
[0055] S1. Preoperative preparation:
[0056] S1.1 Use a high-definition hair follicle detector to examine the patient's scalp to confirm that there are no contraindications such as folliculitis or psoriasis, and that the density of native hair is approximately 40 hair follicle units / cm², with the hair flow direction from front to back.
[0057] S1.2 Design the hairline as a slight arc according to the face shape (oval), with density zoning: 150 points / cm² at the edge of the hairline, transitioning inward to 200 points / cm²;
[0058] S1.3. First, apply numbing cream and pigment behind the ear for an allergy test. If there is no redness or swelling after 30 minutes, apply a thin layer of topical numbing cream to the treatment area for 10 minutes. After wiping it off, apply additional numbing cream to the sensitive area on the forehead. After seven needles lightly touch the scalp without causing any stinging sensation, the formal procedure can begin.
[0059] S2. Pigment preparation: Take three pigments, namely dark brown, natural brown and light flax, and put them into sterile pigment cups for later use.
[0060] S3, Seven-needle technique (8-minute interval between each layer):
[0061] S3.1, First layer of basic dotting: Dip seven needles in natural brown ink, insert the needles vertically 0.6mm, with a density of 180 dots / cm², and dot along the inner side of the hairline from front to back, forming a cluster of dots;
[0062] S3.2, Second layer of three-dimensional deepening: Change to dark brown, adjust the center needle protrusion by 0.3mm, deepen the center of each dot once, insert to a depth of 0.9mm, so that the center color dot is significantly darkened;
[0063] S3.3, Third layer biomimetic transition: Change to light flaxen color, adjust the surrounding needle protrusion by 0.2mm, and lightly prick at a 50° angle along the hair flow direction in the gap of the dot group, with a line length of about 3mm, to form a natural transition shadow;
[0064] S3.4, Fourth layer random fine-tuning: Use a single needle to apply natural brown dye and randomly add a small number of scattered dots at the edge of the dot group to break the regular arrangement.
[0065] S4. Immediate Postoperative Care:
[0066] S4.1 Gently wipe the scalp with sterile saline solution to remove excess color;
[0067] S4.2 Apply a thin layer of anti-inflammatory scalp essence, and apply color-fixing and repairing cream after 5 minutes;
[0068] S4.3 Wear a sterile protective cap and inform the patient not to remove it for one hour.
[0069] S5. Staged Post-operative Care: Days 1-2: Do not wash hair, avoid exercise and sweating, and elevate your head with pillows while sleeping; Days 3-7: Rinse with warm water, use sulfate-free shampoo, and allow to air dry naturally until scabs fall off; Days 8-30: Wash hair normally without rubbing, and wear a hat or apply scalp sunscreen when going out; Follow-up appointment 30 days post-operatively: If the color retention is good and there is no significant fading, no touch-up is needed. Patient satisfaction is high, the appearance is natural and three-dimensional, and the hair texture is realistic.
[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A seven-needle method for three-dimensional biomimetic hair micropigmentation, characterized in that, Includes the following steps: S1. Preoperative preparation: Clean and disinfect the scalp, draw the outline of the micropigmentation, and determine the shape and density of the hairline. S2. Pigment Mixing: Mix at least three different shades of hair pigment according to skin tone and original hair color, namely dark, medium and light shades. S3, Seven-Needle Method Operation: Perform the operation in sequence: the first layer is basic point pricking, the second layer is three-dimensional deepening, the third layer is bionic transition, and the fourth layer is random fine adjustment, with an interval of 5-10 minutes between each acupuncture method; S4. Immediate post-operative care: Cleanse the scalp, apply repair cream, and provide immediate protection.
2. The seven-needle method for three-dimensional biomimetic hair micropigmentation according to claim 1, characterized in that, The preoperative preparation in step S1 includes the following steps: S1.1 Use a high-definition hair follicle detector to analyze the scalp condition, distribution and growth direction of native hair, skin color and pigmentation, and delineate the operating area; S1.
2. Based on head shape, face shape and individual needs, design the hairline shape, hair follicle density distribution and color gradation scheme; S1.
3. Apply a thin layer of topical numbing cream to the operating area for 10 minutes. After wiping off the topical numbing cream, apply additional topical numbing agent to sensitive areas. Before the operation, gently touch the scalp with a seven-needle needle to confirm that there is no stinging sensation before proceeding with the operation.
3. The seven-needle method for three-dimensional biomimetic hair micropigmentation according to claim 1, characterized in that, The seven-needle method operation in step S3 includes the following steps: S3.1 First layer of basic dotting: Using a seven-needle needle, dip it into the intermediate color pigment and dot along the inner side of the hairline at a preset density. Each dotting creates a micro cluster of seven color dots. S3.2 Second layer three-dimensional deepening: Replace with dark pigment, adjust the length of the center needle protrusion to be 0.2-0.4mm longer than the surrounding needles, and perform a second dotting at the center of each dot group from the first dotting to deepen the color of the center dot; S3.3, Third layer biomimetic transition: Replace with light-colored pigments, adjust the length of the protruding needles around the perimeter to be 0.1-0.3mm longer than the central needle, and lightly prick the gaps between adjacent dot groups to form a light-colored transition halo; S3.4, Fourth layer random fine-tuning: Use a single or three-needle dipped in a medium or light color to randomly add scattered dots around the dot group.
4. The seven-needle method for three-dimensional biomimetic hair micropigmentation according to claim 1, characterized in that, The postoperative immediate care in step S4 includes the following steps: S4.1 Cleaning: Gently wipe the scalp with sterile saline solution to remove excess color; S4.2 Anti-inflammatory and color-fixing: First, apply a thin layer of anti-inflammatory scalp essence and wait 5 minutes for it to be absorbed, then apply a thin layer of special color-fixing and repairing cream; S4.3 Immediate Protection: Wear a sterile protective cap on the scalp to avoid contact with dust and bacteria, and inform the customer not to remove it for 1 hour.
5. The seven-needle method for three-dimensional biomimetic hair micropigmentation according to claim 1, characterized in that, In step S3.1, the first layer of basic puncture is performed by vertical needle insertion and withdrawal, with an insertion depth of 0.5-0.8 mm and a density of 150-200 points / cm².
6. The seven-needle method for three-dimensional biomimetic hair micropigmentation according to claim 1, characterized in that, In step S3.2, the second layer of three-dimensional deepening is 0.2-0.4 mm deeper than the first layer, and the same position is only deepened once.
7. The seven-needle method for three-dimensional biomimetic hair micropigmentation according to claim 1, characterized in that, In step S3.3, the third layer of biomimetic transition lines is 2-4mm long and tilted at 45-60° along the original hair flow direction to enhance the hair's fluidity and natural growth effect.
8. The seven-needle method for three-dimensional biomimetic hair micropigmentation according to claim 1, characterized in that, Following step S5, which provides immediate postoperative care, the procedure also includes phased postoperative care, which further includes the following steps: For 1-2 days after the surgery, avoid water, sweat, and scratching your scalp. Do not use any shampoo or conditioner. Avoid high-temperature environments and elevate your head while sleeping to reduce scalp pressure. For 3-7 days after the procedure, gently rinse your scalp with warm water and use mild, non-irritating, sulfate-free scalp care products. Let your scalp air dry after washing. Do not pick at the scabs during the scab formation period; allow them to fall off naturally. Wash your hair normally 8-30 days after the procedure, avoiding vigorous rubbing of the treated area; apply scalp-specific sunscreen before going out to prevent pigment oxidation; do not dye or perm your hair. A follow-up examination is scheduled 30 days after the surgery. If there is any local discoloration or insufficient density, local touch-up will be performed.
9. The seven-needle method for three-dimensional biomimetic hair micropigmentation according to claim 1, characterized in that, The hair pigment used is a medical-grade pure plant-based pigment that does not contain heavy metals, and the colors used should avoid pure black and dark blue.
10. The seven-needle method for three-dimensional biomimetic hair micropigmentation according to claim 1, characterized in that, The preoperative preparation in step S1 also includes a preoperative allergy test. The pigments and anesthetics used in the operation must be applied behind the ear for a skin allergy test.