With increasing environmental pollution and mental stress, improper use of skin care products and other self and external factors that lead to skin cell damage and reduced skin immunity, the thinning of the stratum corneum leads to insufficient skin moisturization, which eventually leads to too weak skin barrier function, unable to resist the phenomenon of external stimuli more and more. The nerve fibers of the skin are overly hyperactive due to frequent external stimulation, resulting in redness, heat, itching, tingling, rashes and other uncomfortable phenomena collectively referred to as sensitive skin. Hydrafacial injection can give the skin the required moisture and repair ingredients to the subcutaneous in a fixed point, quantitative and hierarchical manner, playing the role of replenishing moisture and repair. Microneedling is used to restore the skin’s texture, elasticity and shape by creating a new collagen remodeling effect through the roller method. In this test, we used the medical aesthetic treatment of “hydration” + “microneedling”, which aims to hydrate the skin in layers while repairing and rebuilding the stratum corneum. We will see if we can solve the problem of sensitive skin in one go by combining two types of aesthetic treatments. I. Experimental subjects 60 patients with sensitive facial skin who came to our hospital were selected. Exclusion: 1, combined with severe skin allergy and infection of the skin. 2, systemic diseases and other inflammatory skin diseases. 3.Pregnant and lactating women. 4, the last three months there are related treatment and care affect the effect of the decision. 5.There is no regular treatment as required and the effect cannot be judged. 6.Patients with alcoholism, drug addiction, and mental illness. Sixty patients who met the requirements were randomly divided into treatment group, control group 1 and control group 2. There were 20 cases in the treatment group: 5 males and 15 females, aged 18-45 years, with a mean age of 31.5 years. Control 1 group 20 cases: 5 males and 15 females, age 18-43 years old, mean age 30.5 years old. Control 2 group 20 cases: 5 male cases, 15 female cases, age 18-40 years old, the average age of 29 years old. Second, the choice of medical aesthetic instruments hydrophobic injection instrument, LED light wave treatment instrument, roller type micro-needle, mechanical protein mask, anti-allergy repair nutrients. Third, pre-treatment preparation Before treatment, communicate with the candidate in detail about the treatment method, treatment post-operative reaction and post-operative precautions, and sign the pre-treatment informed consent form. Cleanse the face, take 5 photos of the patient’s face in the same environment, the same equipment, the same angle and the same brightness on the front, the left and right 45 degree side and the left and right 90 degree side respectively. If necessary, close-up photos of local sensitive areas were taken. The skin detector is used to monitor the red zone, purple matter, texture, pores, UV spots, brown spots, wrinkles, etc. from the left side, front view and right side respectively. The test data and photos were recorded and kept on file. IV. Treatment process Treatment group: use “water light needle” and “micro-needle therapy” combined treatment, time interval of 1 month, 3 times as a course of treatment. Control 1 group: only use the hydrophobic injection of anti-allergy repair nutrients. Time interval of 1 month, 3 times as a course of treatment. Control group 2: Only use “micro-needle therapy” to roll in anti-allergy repair nutrients. The time interval is 1 month, and 3 times is a course of treatment. The post-operative repair and care of the treatment group, control group 1 and control group 2 were the same. The specific operations of the treatment group were as follows: 1. The hydrophobic injector injected the anti-allergy repair nutrients and repair serum in the order of jaw – cheek – temple – around the eye – forehead – nose. 2, physiological saline gauze wipe the surface of the skin, with roller type micro-needle from the jaw, in turn cheeks, around the eyes, temples, nose first slowly rolling once, the remaining anti-allergy repair nutrients applied to the face, and then local fast, uniform, different angles, depth uniform order rolling 3-5 times. Weaken the intensity around the eyes, shallow depth, 2-3 times. Apply the remaining drugs and gently massage to drug absorption. 3, sterile dry gauze cleaning around the eyes and jaw edge, followed by ice application of Armor Protein Mask and simultaneous LED red light exposure for 10 minutes. To promote pinhole closure and reddening repair, shorten the recovery period and reduce side effects. Post-operative instructions: 24 hours after surgery, no water, clean the skin with sterile gauze with mask water and then apply the protein mask, 3 patches for 24 hours. After that, apply 1-2 patches every day for one week. Within one week, no spicy stimulation, seafood, beef and mutton, etc., quit smoking and alcohol. Forbid the use of functional cosmetics, avoid strenuous exercise and high temperature sauna. During the treatment period, do a good job of hydration, repair and sun protection. After one month, the next treatment will be carried out on time. Control 1 group will be operated as described above, with all repairing solution and essence injected into the designated level of the skin by hydration injection. The control 2 group operated as the above micro-needling procedure by rolling all the repairing solution and essence into the subcutaneous, and other steps were exactly the same as the treatment group. V. Judgment method After three months of continuous treatment according to the treatment course, the clinician combined with skin testing to evaluate the efficacy. There are 5 levels: Level 0 is no improvement, Level 1 is 1%-24% improvement, Level 2 is 25%-49% improvement, Level 3 is 50%-74% improvement, Level 4 is 75%-100% improvement. Improvement of grade 3 and above was considered effective treatment, and the total effective rate was counted. The patients were asked online or at the follow-up visit if there were any side effects such as inflammation, allergy and pigmentation after each treatment, and the incidence of side effects was recorded. Control group 1 and control group 2 were evaluated and compared according to the same method. Satisfaction: All candidates were self-assessed before treatment, after each treatment, and after three months of treatment at follow-up visits, and were graded into five levels according to their self-satisfaction: grade A was unsatisfactory; grade B was somewhat satisfactory; grade C was satisfactory; grade D was very satisfactory; and grade E was very satisfactory. The satisfaction rate was calculated by using grade C or above as the treatment satisfaction. VI. Treatment results All 60 cases of candidates completed 3 treatments as required. After assessment, the number of cases that reached grade 3 or above in the treatment group was 20, and the self-satisfaction assessment was all at grade C and above, with 100% efficiency. In the control 1 group, the number of patients who achieved grade 3 or above was 19, and the efficiency rate was 95%, with one case of self-evaluation satisfaction grade B and 19 cases of grade C and above. In the control 2 group, the number of those who reached grade 3 and above was 18 cases, and the ineffectiveness was 2 cases, with an efficiency rate of 90%. Self-evaluation satisfaction grade B was 2 cases, grade C and above was 18 cases. Both clinicians and candidates agreed that the combination of hydrafacial and microneedling had significant effects on the repair of sensitive facial skin. No significant side effects were observed during the treatment period in both the treatment and control groups. VII. Conclusion In this paper, 20 candidates in the treatment group combined hydrafluorescence and microneedling for facial sensitive skin repair, 18 cases received significantly effective treatment, with self-satisfaction assessments at grade C and above, and no significant adverse reactions were observed. In contrast, in the other two groups, data monitoring showed that neither had a high efficiency and satisfaction rate of the combined treatment. Therefore, combining the two treatments to complement each other’s strengths and weaknesses has a mutually supportive and mutually promoting effect on skin barrier reconstruction, and the clinical observation is good and worthy of further study and promotion. Tips: Sensitive skin refers to a state of hyperreactivity of the skin under physiological or pathological conditions, mainly on the face, which is clinically manifested by the competent symptoms of burning, tingling, itching and tightness when stimulated by physical, chemical and mental factors. Facial sensitive skin problem is a high incidence of clinical and aesthetic skin problems in recent years, in today’s increasingly concerned about skin care, skin care products directly cause more and more adverse reactions, and the incidence of facial sensitive skin closely related to the use of skin care products is also increasing. The incidence is generally higher in women than in men, ranging from 40% to 55.98% in Asian women, and about 36.1% in Chinese women. Epidemiological surveys in Europe, the United States, and China show its incidence to be 38.4%, 44.6%, and 23%, respectively. Current studies suggest that the development of sensitive skin is a complex process involving skin barrier-neurovascular-immune inflammation. Under the interaction of intrinsic and extrinsic factors, the skin barrier function is impaired, causing an increase in sensory nerve afferent signals, resulting in increased skin reactivity to external stimuli and triggering a skin immune inflammatory response. Microneedling is the use of microneedle rolling stimulation to open up a large number of microscopic ducts in the skin to introduce the skin’s needed repair and nutrients, hyaluronic acid, etc. into the subcutaneous. The large number of skin micropores (tens and hundreds of thousands) can attack the skin’s self-healing ability, activate cell proliferation, stimulate collagen regeneration and elastic fiber reorganization, thus enabling the skin to achieve a good state of self-healing. However, the shortcoming is that the drug loss is more serious and the drug absorption and utilization is lower than that of hydroluminescence. In contrast, hydraluminescence injection uses negative pressure technology to lift the skin and give the moisture and repair ingredients needed by the skin to the level where the skin needs to be treated accurately in a fixed amount and at a fixed level, and the amount injected can be accurately controlled by the instrument, and the drug will be injected into the skin better and more often to improve the efficiency of drug injection, thus increasing the efficacy. In contrast to microneedling, the stimulation of skin self-repair is not as effective as microneedling. So to sum up, we can avoid the loss of medication by hydrophobic injections, which target different levels of skin problems for moisture and nutrient replenishment, and also stimulate the reconstruction of skin barrier through microneedling, giving full play to the collagen remodeling effect, reshaping collagen structure and form, restoring skin texture, elasticity and form, and restoring skin barrier function. With this two-pronged approach, the efficacy of the treatment is greatly improved with few side effects, and the patient’s satisfaction is greatly enhanced.