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Aims: The purpose of this paper was to review the literature focusing on the scalp health of the Korean people in the COVID-19 blue era and the possibility of significant development as an academic., Methods: This review paper is a literature review, and the method is a narrative review., Results: It was found that the higher the awareness of hair loss, the better the scalp and hair management behavior. South Korea needs to develop systematic customized management methods, scalp programs, and products due to the development of the COVID-19 era and the development of the 4th industry., Conclusion: South Korea still needs to improve the expertise of tricolologists and national social security insurance and research along with the growth of the beauty and healthcare service industry in the COVID-19 blue era., (© 2022 Wiley Periodicals LLC.)

Background: Facial skin redness can have a negative impact on the quality of life. In this study, we investigated the skin biophysical parameters associated with facial skin redness as a function of aging., Methods: Our aims were as follows: (1) to understand the impact of non-pathological facial skin redness on the quality of life of Korean women through a survey; and (2) compare skin biophysical properties between women with and without facial skin redness., Results: Women aged between 20 and 39 years perceived their own facial skin redness at a higher rate than those aged ≥40 years. In addition, in redness-prone women, the intensity of skin redness and skin surface perfusion were higher, while skin hydration was lower regardless of age. In redness-prone women aged ≥40 years, the values for transepidermal water loss, elasticity, and skin thickness were lower, and the mean pore depth was greater. Facial redness intensity was higher, and the distribution was wider in redness-prone younger women, while only redness intensity increased in the older age group., Conclusions: Overall, redness-prone women aged ≥40 years had weaker skin properties. Our study indicated the age-related biophysical characteristics of non-pathological facial skin redness. We believe that our findings will help improve its negative effects., (© 2021 Wiley Periodicals LLC.)

Background: Consumer and advanced consumption culture in modern society is an era that focuses on individual personality and value, and "my own customized products", or customized marketing strategies, are actively being developed throughout the industry. Recently, IT technologies that can support personalized services such as artificial intelligence, ubiquitous systems, and marketing automation have been recognized for their potential, directly or indirectly affecting distribution industries affected by personal consumption culture. Accordingly, customized products or services, i.e., customization, are attracting attention as an effective methodology to cope with such market changes., Objectives: Among the necessities used by modern women, cosmetics account for an endless interest in beauty and maintaining physical and mental health, and as the cosmetics market expands, it is considered that the cosmetics industry needs a clearer and in-depth study on the cosmetics submarket to satisfy consumers' diverse needs., Methods: This review paper is a literature review, and a narrative review approach has been used for this study. A total of 300 to 400 references were selected using representative journal search websites such as PubMed, Google Scholar, Scopus, ResearchGate, LitCovid, DBPia, and RISS, of which a total of 42 papers were selected in the final stage based on 2013 to 2022 using PRISMA flow diagram., Results: This study suggested to indicate the changes in the cosmetics market due to the emergence of cosmetics curation services after the coronavirus disease-19 pandemic, advanced changes in consumer purchase patterns following the 4th Industrial Revolution, and significant future prospects of cosmetics curation services., Conclusion: As the beauty and cosmetology industry is expected to develop in the future, it will grow as a centerpiece of the beauty industry and symbolizes nationalized cultural pride. Therefore, this review article will be continuing to promote customization as a premium beauty service for dermatological condition in Republic of Korea through corporate analysis., (© 2022 Wiley Periodicals LLC.)

Background: Problematic toenails caused by various diseases that are infected by various bacteria are discolored or deformed if left unattended for a long time are gradually increasing in modern society. Accordingly, the present study examines the anti-bacterial effects of LCN products, focused on Pseudomonas aeruginosa and Trichophyton rubrum, which can appear in problematic toenail symptoms. After the treatment, a significant anti-bacterial effect occurring on problematic toenails when a product containing silver ion (Ag + ) will be analyzed., Methods: The anti-bacterial activity of LCN functional gel products in anti-fungal and/or anti-bacterial potency was confirmed by the paper disk method against two strains (Pseudomonas aeruginosa and Trichophyton rubum)., Results: From July 2019 to October 2019, 30 men and women in their 20s and 50s who needed to manage problematic toenails in Wonju city, Gangwon-do, Republic of Korea, were asked to use LCN products once every two weeks. After 4 months, changes in the managed toenails were observed. Both products showed very good anti-microbial activity against, Trichophyton rubum but a very weak one against Pseudomonas aeruginosa., Conclusion: As a result of this study, although there was a difference between individuals, the feet treated with LCN products showed effective anti-bacterial activity against topical anti-bacterial effects., (© 2022 Wiley Periodicals LLC.)

Background: The beauty industry, one of the face-to-face the essential industries in the COVID-19 pandemic, has been hit hard., Aims: We present the current state of the beauty ecosystem in the corona pandemic and the future direction of the beauty industry after COVID-19., Methods: This review paper is a literature review, and a descriptive review approach was used in this study. A total of 100-150 references were selected using representative journal search sites such as PubMed, Google Scholar, Scopers, Research Gate, and RISS, and a total of 24 papers were finally selected as of 2017-2022 using PRISMA flow diagram., Results: In Korea, the beauty industry, which is essential to face-to-face due to COVID-19, was hit hard. The contraction of consumer sentiment led to a drop in sales. The online market has become more active as offline activities have declined sharply. Even during the COVID-19 era, the Republic of Korea is an IT powerhouse. With the widespread use of K-drama and K-pop, the interest in Korean beauty and fashion has increased rapidly throughout the world. Therefore, K-Makeup, hair, skincare, and nailcare are all the rage through YouTube. Predict new changes in the Korean beauty industry market, which is the center of K-beauty and K-cosmetics. As a leader in the beauty industry, the Republic of Korea will present the sustainability of the beauty ecosystem and the direction of its development., (© 2022 Wiley Periodicals LLC.)

Background: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the new virus responsible for the coronavirus disease 2019 (COVID-19) pandemic. According to these circumstances, a study was conducted to prepare a long-term non-face-to-face outpatient treatment service during the COVID-19 pandemic. Given the current situation of the times, it is expected that there will be no return to the non-face-to-face prior., Objectives: Therefore, this study descriptively investigated changes in consumer demand for new changes in the cosmetic market that has changed since COVID-19., Methods: It was written with reference to keywords such as "Covid Mobile Shopping," "Covid MZ Generation," "Covid Live Commerce," and "Fun Content." This study was conducted by searches on PubMed, Google Scholar and Scopus, and ResearchGate. A total of 398 papers were found, of which 40 were successfully included in this study., Results: It is expected that this era will be centered on the MZ generation, which has emerged as a new consumer in the market, where individual tastes and individuality are emphasized. Millennials and Generation Z, also called the "SNS generation," are focusing on consumption trends., Conclusion: It is expected that this review will be used as important marketing material for a new change in the cosmetics market by clearly understanding the consumer needs of the cosmetics industry that has changed in the untact era., (© 2022 Wiley Periodicals LLC.)

Background: Severe acute respiratory syndrome coronavirus disease 19 (COVID-19) is attracting worldwide attention and has been declared an infectious disease by the World Health Organization (WHO), and accordingly, interest and meaning in health and well-being are expanding in recent years., Aims: This paper attempted to investigate the recognition and development potential of customized cosmetics focusing on inner beauty products through DTC (Direct to Customer) genetic testing in the era of COVID-19 pandemic., Patients/methods: The number of women included in the survey of consumers living in Seoul metropolitan city ranged from 40 to 60, and 380 women in Republic of Korea. Statistical processing of the data collected by the data analysis method is analyzed using the Statistical Package for Social Science (SPSS) WIN25.0 statistical package program through the process of data coding and data cleansing., Results: In this study, the DTC genetic test, single, and/or combination treatment for customized inner beauty products and customized cosmetics were compared and analyzed, respectively. Accordingly, in keeping with the rapidly changing market conditions, we sought to study customized inner beauty and customized cosmetics recognition and purchasing behavior through DTC genetic testing in the unexplored era after COVID-19 pandemic. As a result, it was significantly more effective to use customized inner beauty and customized cosmetics after DTC genetic test (p < 0.001)., Conclusion: This study emphasizes that after the global COVID-19 pandemic worldwide that occurred after January 2020, the definition of health persistence, wellness, and well-dying associated with beauty and cosmetology is also evolving from the DTC genetic test. In our results, it was found for the first time that the intake of customized inner beauty preparations and the use of customized cosmetics would be more effective. In the above significant research results, it is believed that research on the combinational effect of customized inner beauty products and customized cosmetics is required in the global DTC genetic testing market., (© 2021 Wiley Periodicals LLC.)

Background: Our research results will be helpful in the development of the K-beauty customized cosmetics industry as well as consumers who are having difficulty in purchasing cosmetics due to the rapid transition to a non-face-to-face society due to COVID-19., Objectives: This paper attempted to investigate the recognition and development potential of customized cosmetics, focusing on mobile shopping in the era of COVID-19 untact period., Methods: The women included in the study consumer Seoul residence in the mobile shopping experience 40-60 targets for women 380 were the people. Statistical processing of data collected by the data analysis method is analyzed using the SPSS (Statistical Package for Social Science) WIN25.0 statistical package program through the process of data coding and data cleaning., Results: As the untact era enters, the frequency of using non-face-to-face mobile shopping for customized cosmetics is increasing, and it is believed to be deeply related to the level of interest in skin and recognition of customized cosmetics, such as the use of hands-on apps that incorporate new technologies of the 4th industrial revolution. Looking at the Kaiser-Meyer-Olkin to confirm the normality and validity of the population proved its validity. January 2020 (after COVID-19 spread), the use of mobile shopping was increased. In the future, it was significantly higher to continue shopping for cosmetics using mobile devices p < 0.001., Conclusion: The present study focused on the recognition and development potential of customized cosmetics on mobile shopping in the era of COVID-19 untact period. Our results suggested that the possibility of developing customized cosmetics through mobile shopping in the untact era after COVID-19 will be endless, and it is believed that various marketing strategies will be supported in the future., (© 2021 Wiley Periodicals LLC.)