Community-based participatory research (CBPR) using barbershop interventions is an emerging approach to address health disparities and promote health equity. Barbershops serve as trusted community settings for health education, screening services, and referrals. This narrative mini-review provides an overview of the current state of knowledge regarding CBPR employing barbershop interventions and explores the potential for big data involvement to enhance the impact and reach of this approach in combating chronic disease. CBPR using barbershop interventions has shown promising results in reducing blood pressure among Black men and improving diabetes awareness and self-management. By increasing testing rates and promoting preventive behaviors, barbershop interventions have been successful in addressing infectious diseases, including HIV and COVID-19. Barbershops have also played roles in promoting cancer screening and increasing awareness of cancer risks, namely prostate cancer and colorectal cancer. Further, leveraging the trusted relationships between barbers and their clients, mental health promotion and prevention efforts have been successful in barbershops. The potential for big data involvement in barbershop interventions for chronic disease management offers new opportunities for targeted programs, real-time monitoring, and personalized approaches. However, ethical considerations regarding privacy, confidentiality, and data ownership need to be carefully addressed. To maximize the impact of barbershop interventions, challenges such as training and resource provision for barbers, cultural appropriateness of interventions, sustainability, and scalability must be addressed. Further research is needed to evaluate long-term impact, cost-effectiveness, and best practices for implementation. Overall, barbershops have the potential to serve as key partners in addressing chronic health disparities and promoting health equity.

[This corrects the article DOI: 10.3389/fpubh.2023.1161645.].

Women from different ethnic backgrounds are disproportionately affected by non-communicable diseases (NCDs). Underpinned by the community capital they harness, hairdressers have successfully delivered NCD prevention programmes, particularly for African-American women in disadvantaged areas. Integrating community organisations and networks into existing primary care pathways can provide a sustainable process to address inequalities in access to health care. This scoping review aimed to map the evidence about interventions based in beauty salons, particularly formative research phases, including co-development, community participation, theoretical or conceptual underpinnings, as well as aspects related to training and incentivisation of salon staff, evaluation and equity.
The methodological framework was based on the seminal guidance of Arksey and O\'Malley, using the \'PCC\' (participants, concept, context) structure with incorporation of other relevant materials. Studies eligible for inclusion were salon-based health interventions (concept) focused on NCDs prevention (context), targeting women (participants) from different ethnic backgrounds and published in English. The searches were conducted across PubMed, Web of Science and OVID in June 2020 and updated in January 2023, with reference lists also screened. The Reach, Effectiveness, Adoption, Implementation, and Maintenance RE-AIM framework was used to explore the potential public health impact.
419 titles and abstracts were screened, with eight (2%) meeting the inclusion criteria, all based in the United States of America. Two used formative phases to inform intervention development, three described evidence of co-development with key stakeholders or experts within the community and five studies referred to theoretical or conceptual frameworks. Incentivisation was provided to salon staff in five of the studies, and to clients in three of the studies. Four of the investigations collated data on socioeconomic characteristics of the target population.
Formative research in the scoped studies was weakly reported upon. Community participation was implicit in each of the scoped studies, yet its application varied considerably. Theoretical and conceptual frameworks were not consistently used, and there was inadequate process evaluation to ensure equitable reach and retention of targeted groups, suggesting a more concerted effort to address health equity is needed for future interventions.

Early detection, treatment, and care are important for the prevention of dementia. Though olfactory impairment has been reported to be associated with mild cognitive impairment (MCI), there are few reports involving community-dwelling older adults with no difficulty in daily life in Japan.
This study aimed to identify the frequency of MCI in community-dwelling elderly people attending community salons in a city with a high aging population, and to determine the usefulness of a pocket olfactory discrimination test.
We recruited 268 independent older adults attending community salons. The Japanese version of the MCI Screen was used to evaluate cognitive function, defining MCI as <49.8 out of 100 scores of the memory performance index (MPI). The Japanese version of the University of Pennsylvania Smell Identification Test (UPSIT-J) was used for olfactory discrimination and the number of correct answers out of 4 questions was noted.
Of the salon participants, 138 (51.5%) were classified as having MCI. As the number of correct answers on the olfactory test decreased, the percentage of participants with MCI increased. The MPI score of the low UPSIT score group was significantly lower than that of the high UPSIT score group.
This study revealed that approximately half of the elderly local residents living without daily problems were suspected of having MCI. The UPSIT-J-4 is a simple olfactory identification test, and can be used at any time and any place. It is useful for screening cognitive function via olfactory identification in a salon-like setting.

Although frailty has detrimental physical and psychological effects on elderly people, it is potentially reversible. In this study, we aim to evaluate the effectiveness of a pilot frailty education program implemented through barbershops/salons in Japan. In January 2018, we selected five barbershops/salons in Japan where customers were educated on frailty, which was classified as \"normal,\" \"prefrail,\" and \"frail.\" We developed a web-based assessment tool to reduce the workload for barbers/stylists. Participants included 45 customers (82% women), with a median (interquartile range) age of 53.0 (47.5-57.5) years, and a mean ± SD BMI of 22.3 ± 2.7. Frailty scores indicated that 35% of participants were normal, 58% were prefrail, and 7% were frail. Frailty status scores reflected no significant differences after the intervention. Customers classified as frail were advised to visit the regional comprehensive support center for further professional frailty assessment. Participants, especially those aged over 65 years, found the web-based assessment difficult to use. In conclusion, a frailty education program implemented through barbershops/salons is possible because barbers/stylists can provide information on and assessment of frailty. Females and highly educated customers are more likely to be interested in participating. Nevertheless, a simple intervention is essential to expand the program nationwide.