Asian Hair: A Review of Structures, Properties, and Distinctive Disorders

The document is a comprehensive review of the structures, properties, and disorders specific to Asian hair. It notes that Asian hair is generally straight, dark, and has a larger diameter with a thicker and more compact cuticle layer compared to other ethnicities, which contributes to its strong mechanical properties. Genetic factors, particularly mutations in the EDAR gene, influence the characteristics of Asian hair. The review also covers distinctive hair disorders in Asian populations, such as linear lupus panniculitis and pseudocyst of the scalp, and emphasizes the need for further research due to limited current knowledge. Additionally, it compares the properties of Asian hair to other ethnic groups, mentioning that Asian hair has the fastest growth rate, the largest melanosomes, and differences in lipid content and mechanical properties. The document concludes that more studies are necessary to better understand the unique aspects of Asian hair and how it responds to treatments.