The Distribution of Hair in Han Chinese
September 2017
in “
Plastic and Aesthetic Research
”
Studysummary This study captured digital images of hair regions in healthy individuals and patients with androgenetic alopecia to analyze and compare the number of follicular units and hairs using software. Our plain-language summary of this paper — not a Tressless recommendation.
In 2017, Guan Wang and colleagues studied the hair distribution in 146 healthy Han Chinese individuals and 41 patients with androgenetic alopecia (AGA). They found that the mean follicular unit (FU) density of the healthy subjects was 74.36 ± 13.33 units/cm2 and their mean hair density was 143.33 ± 28.08 hairs/cm2, with no significant difference between males and females. The mean FU density and hair count in AGA patients were lower than those of healthy individuals. The study concluded that the FU and hair densities of healthy Han Chinese are lower than those of whites and Africans. The researchers also found that transplanting 300 FUs could achieve 90% of the normal density of vertex hair, requiring a scalp area of about 3.6 or 9 cm2 to be excised or extracted from the occipital region. These findings were intended to serve as a reference for clinical practice and future research.
