Changes in Chinese hair growth along a full year. (3rd September 2014)

• Record Type: Journal Article
• Authors: Liu, C.; Yang, J.; Qu, L.; Gu, M.; Liu, Y.; Gao, J.; Collaudin, C.; Loussouarn, G.
• Is Part Of: International journal of cosmetic science. Volume 36:Number 6(2014:Dec.)
• Page Start: 531
• Page End: 536
• Publication Date: 2014-09-03
• Subjects: hair growth -- hair treatment -- phototrichogramme -- skin physiology; Cosmetics -- Periodicals; 668.5505
• DOI: 10.1111/ics.12151
• Languages: English
• ISSNs: 0142-5463

Abstract

Synopsis: Objective: To confirm the existence of seasonal hair growth cycle among Chinese subjects and objectivize the seasonal effect of hair loss; the hair growth parameters of Chinese volunteers were followed monthly for an entire year on the same area of vertex. Methods: The hair growth parameters of 41 Chinese volunteers (women and men), free from alopecia, were recorded monthly along an entire year using the phototrichogram technique. Results: Results show an increased rate of telogen hairs (growing arrest) around August–September in the study group, as previously reported in European subjects albeit of a lower extent and remaining within the normal range of healthy head hair parameters. The possible effects of latitude and daylight duration are discussed. Conclusion: Data confirm that Chinese hairs present characteristics of the most developed and fast growing terminal fibres, as compared to other non‐Asian ethnics.