If hair aging is an inevitable biological process, it is nevertheless the consequence of certain factors responsible for visible changes.
A new study describes the unique characteristics of aging hair among different ethnicities. According to the authors, these findings could help take a specific approach to prevent hair damage over the course of life. In detail, scientists found that the appearance of graying of hair varies by ethnicity. In fact, the average age for Caucasians was around thirty years old, compared to the end of their thirties for Asians and forty for Africans.
Like the skin, the hair aging includes an intrinsic aging, which involves the natural physiological changes that occur over time, and the extrinsic aging, or changes associated with environmental exposures and physical stress caused by daily care. “Despite a similar chemical makeup, the structural properties of hair vary among different ethnicities, and therefore hair aging also differs. As the population ages and becomes more diverse, there is a growing need to understand the process. of aging hair in different hair types, ”explained author Neelam Vashi, associate professor of dermatology at Boston University School of Medicine and director of Boston University Cosmetic and Laser Center at Boston Medical Center.
For this study, researchers analyzed 69 publications to examine current knowledge on changes in hair structure over time. They thus collected data on hair structure, aging characteristics, and responses to extrinsic damage as well as differences between races and ethnicities were collected.
The impact of menopause
According to the researchers, the dual role of hair for cosmetic protection and enhancement makes them incredibly important for physical and mental well-being. “A thorough understanding of the unique characteristics of hair aging among different races and ethnicities is essential for appropriate management of mature patients, ”concluded the lead author of this study.
The Caucasians and the Asians often find damage to the distal hair shaft. The African Americans, them, suffer damage near the root. Moreover, after menopause, women also see some changes with a decrease in anagen hair (active or growing) in the frontal leather, less growth rates and a decrease in hair diameter.