The Characteristics and Inheriting Pattern of Skin Aging in Chinese Women: An Intergenerational Study of Mothers and Daughters

Zhuying Zhang,1,2,* Mai Shi,1,2,* Jinghui Li,3 Dian Chen,1,2 Jie Ren,1,2 Zhenghui Li,1,2 Hsiaohan Tuan,1,2,* Yi Zhao1,2,* 1Department of Dermatology, Beijing Tsinghua Changgung Hospital, Beijing, People’s Republic of China; 2Photomedicine Laboratory, Institute of Precision Medicine, Tsinghua University, Beijing, People’s Republic of China; 3School of Medicine, Tsinghua University, Beijing, People’s Republic of China*These authors contributed equally to this workCorrespondence: Yi Zhao; Hsiaohan Tuan, Department of Dermatology, Beijing Tsinghua Changgung Hospital, No. 168 Litang Road, Changping District, Beijing, 102218, People’s Republic of China, Tel +86-13718646181 ; +86-18610015166, Email zhaoyimd@tsinghua.edu.cn; dxha00337@btch.edu.cnIntroduction: The aging of the skin, which is affected by both external and internal causes, can reflect the external age and the internal health status. While the aging characteristics differ across ethnic groups, the specific changes in skin aging within the Chinese population have been underexplored. Moreover, investigating the similarity of aging skin characteristics between parent-offspring pairs remains uncharted territory. This study aims to fill these gaps by examining the skin aging features of Chinese women and assessing the similarity in aging skin characteristics between mother-daughter pairs.Methods: A total of 40 mother-daughter pairs were recruited and analyzed. The perceived ages of the participants were evaluated, and their aging skin traits were systematically graded. Statistical methods were employed to discern the trends of the aging skin characteristics. By introducing a novel similarity parameter, we compared whether various skin aging characteristics have similar patterns between mothers and daughters.Results: Our findings indicate that age 50 represents a pivotal point in skin aging. Beyond this age, the increase in rhytides and laxity scores accelerated noticea