Naturally Occurring Hairlines in Non-Balding Oriental Men of East and Southeast Asian Origin

The study analyzed the hairlines of 209 non-balding East and Southeast Asian men aged 18 to 85 from Singapore and surrounding areas to inform hair restoration surgery practices. It found that 85.7% had no family history of hair loss, hair density decreased with age (average of 77.8 FU/cm² and 110 hairs/cm²), and the height of the hairline remained consistent across ages. Common hairline shapes were upsloping or straight, with 47.4% having a widow's peak and 66% lacking lateral mounds. The frontotemporal angle was round in 62.2% of participants. The study concluded that older men require lower hairline densities for satisfaction and highlighted the importance of considering natural hairline characteristics and future hair loss when planning hair restoration surgeries.