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Changes in Chinese hair growth along a full year
Author(s) -
Liu C.,
Yang J.,
Qu L.,
Gu M.,
Liu Y.,
Gao J.,
Collaudin C.,
Loussouarn G.
Publication year - 2014
Publication title -
international journal of cosmetic science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 62
eISSN - 1468-2494
pISSN - 0142-5463
DOI - 10.1111/ics.12151
Subject(s) - hair growth , daylight , range (aeronautics) , biology , medicine , demography , physiology , physics , optics , materials science , sociology , composite material
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.